Despite its nighttime block getting better over time, Cartoon Network is incredibly guilty of this. Long-Runners typically get silenced towards the end of their run, while Short-Runners never quite have a launching point to begin with. Other times, the reception to certain shows will be so negative (or the ratings so low) that the network may refuse to acknowledge their existence despite premiering entire seasons after the fact.
Examples have included:
- Baby Looney Tunes, despite CN wanting it to be successful, was barely advertised after launch, nor was it merchandised.
- 2011 YTV imports Sidekick, Almost Naked Animals, and Scaredy Squirrel, as well as the movie tie-in Cloudy with a Chance of Meatballs (2017), all suffered a similar fate, receiving no advertising at all after their debuts. While ANA completed its run on CN (and, surprisingly, got a lot of airings and merchandise despite that), the others got abruptly canned before they were ever completed. Sidekick and Scaredy Squirrel did later return to American television on Qubo however, and both finished their runs on that channel.
- League of Super Evil was so under-advertised by CN that the show only managed to air 7 of its 52 episodes on the channel before vanishing from American airwaves forever.
- What ultimately killed The Life and Times of Juniper Lee, as CN barely advertised the show after its first season before neglecting to altogether. The show wasn't even given the dignity of airing its final two episodes on TV, with those episodes instead being dumped on Cartoon Network Video.
- This is one of the biggest causes for the very short (read: one month) run of Sunday Pants. The show was never advertised, nor was it given any mention on the CN website.
- The Mr. Men Show never got much attention from Cartoon Network after the initial trailer and was barely advertised during the second season. This was what caused the show to get canceled, much to the dismay of the fans.
- Aside from the show appearing in advertisements for the Har Har Tharsdays and Monday Nights blocks, Cartoon Network barely advertised The Marvelous Misadventures of Flapjack after its first season. They didn't even bother advertising the series finale, at all. In fact, unless you were subscribed to series creator Thurop Van Orman's DeviantArt page, you wouldn't have even known that it aired.
- Robotomy wasn't acknowledged until the start of 2011, a solid three months after its debut.
- There was exactly one commercial for their DC Nation block, and CN would only run it during its runtime. The block would mysteriously disappear one day in late 2012 without DC's knowledge, with its planned premieres of Young Justice and Green Lantern: The Animated Series being dropped on the iTunes store shortly after. Eventually the block would return and lose series over time, being strictly limited to Teen Titans Go! and various shorts before being phased out completely.
- Legends of Chima was heavily advertised during its first season. Not so much for its second and third.
- Cartoon Network mostly averted this with The Looney Tunes Show, but they barely advertised the series finale "Super Rabbit" which aired a year after it aired in other countries. The fact that the episode was able to pull a million viewers is a marvel in itself.
- Ben 10: Omniverse had its eighth and final season get the 6 a.m. burn-off treatment in two weeks in November 2014; the only reason it seemed to air was to get a tax write-off onto Turner's balance sheets before the end of the year.
- Canadian import Detentionaire is one of the most destructive examples in the network's history. The show's first 2 seasons were shafted entirely to Cartoon Network's website and app, where they ran with pretty much zero advertising from the network. This, combined with significant editing to the show that made it difficult for viewers to watch (including several banned episodes), resulted in Detentionaire's original network Teletoon cancelling the show on a cliffhanger due to their massive disappointment with its abysmal performance in the US market.
- Spliced was another Canadian show entirely shoved to CN's app and website in 2014, receiving pretty much zero advertising from the network and minor content editing (especially with the theme song, which was shortened due to having the word "crap"). To add insult to injury, episodes were pretty much taken down as quickly as they were added, meaning pretty much no one was ever aware of the show's presence on CN. Unlike Detentionaire, however, Spliced had the luck of being actually given attention on Qubo a few years earlier.
- After happily airing the show with great regularity throughout the summer of 2013, CN suddenly removed the entirety of Grojband from their airwaves (apparently having decided the show was just there to be summertime filler while the kids were busy playing outdoors) and completely shoved it onto the website and app in 2014, where the remainder of its only season aired without any advertising given to it by the network. These episodes did eventually come to TV, but were dropped off to low-rated sister channel Boomerang.
- Sonic Boom premiered in a 7 AM/6 AM timeslot with no advertising - in fact, the first promo was shown after the first episode(s). It's especially jarring compared to how much attention the video games received.
- Try finding any show in the Transformers franchise that aired on Cartoon Network that actually got more than a handful of advertising. Putting each show in an early morning death slot only rubbed more salt on their wounds.
- Cartoon Network did squat when they started airing Be Cool, Scooby-Doo!, to the point where they even canceled it, moving its unreleased episodes to Boomerang, before it could even finish its first season run. Similar situations happened to Bunnicula, Wabbit: A Looney Tunes Productionnote , and The Tom and Jerry Show (when it returned in February 2016) as well.
- Towards the end of Regular Show's final season, CN began promoting it less and less as the network wanted to lean towards more kid-friendly material. This move included a promo that mentioned a new episode with no specific plot details given. What it failed to tell the viewers was that this was actually the Series Finale and a very important episode for Pops.
- Starting in 2015, Adventure Time started getting this treatment with the episodes being advertised solely online. Eventually they stopped advertising it altogether with the seventh season finale receiving no promotion. There was a respectable amount of advertising for season 8's "Five Short Tables" because it focused on the popular gender-bent characters, but the rest of that season was barely, if at all, promoted. This would continue for most of season 9. However, this was averted with the finale which was heavily promoted.
- The Secret Saturdays was a victim of this. The network initially had a lot of faith in the show, as they wanted it to become their next toy-selling Cash-Cow Franchise. After The Secret Saturdays failed to gain much popularity, while its contemporary Ben 10: Alien Force proved to be more successful in both ratings and merchandise, the network decided to put more focus on the latter show, and gave shabby treatment to this one. Coupled with the continuous timeslot changes and lack of reruns, only diehard fans were able to keep track of the show.
- With the exception of "The Last Donnycorn" and "Power of Four", every other season two episode of The Powerpuff Girls (2016) got no advertising, not even on its social media pages. This would continue into the third season before the show was quietly cancelled and reruns were removed. Its poor reviews from fans of the original series and (most likely false) accusations of it being a creepy Self-Insert Fic for writer Jake Goldman as Blossom's love interest "Jared Shapiro," may have something to do with it.
- In early 2017, Cartoon Network introduced a block called "Friday Party." Due to the strong presence of Teen Titans Go! and a last-minute announcement, most people skipped over it thinking that CN was playing favorites. The network is well known for having great success with Friday night programming (as evident with Cartoon Cartoon Fridays), but the ratings for "Friday Party" plummeted. It was later shown the door in April.
- Later that year, a new block called NEW NEW NEW NEW was introduced, which did a better job of featuring other programs. Despite that, more emphasis was still put on TTG than the other shows, preceding the block with nine hours of content. Each promo ended with "It all starts with a new Teen Titans Go! at 6:00!" and the Titans episodes were the only ones promoted out of the block. This lasted until February 2018 when each show got individual promos.
- This ultimately helped drive OK K.O.! Let's Be Heroes to be cancelled after three seasons; execs decided not to renew the show for a fourth season due to lack of popularity, quite a bit of which stemmed from people being unaware that it even existed. Even the show's fans often didn't know when new episodes were on due to a lack of advertising, and many people only heard about the series through internet posts about the fact that it was ending. Even the console game OK K.O.! Let's Play Heroes got a heaping dose of this, and was primarily released as part of a compilation with Steven Universe: Save the Light, with the latter game not only getting all the attention due to being based on a more popular show, but also hogging most of the boxart, leaving some people unaware that another game was even included.
- Cartoon Network gave virtually no advertisements for Mega Man: Fully Charged, with most of the advertising being online. Add that to the show's horrendous time slots, and it’s no wonder it failed spectacularly. Being panned by critics and fans of the source material, from which it heavily deviated, didn't help either.
- Thundercats Roar was advertised very little during its run, with the show eventually being cancelled after a single season. Its polarizing reception may have played a hand in that.
