The TGWTG site's redesign, which was pushed back again and again for over half a decade. As of December 2014, the site was dropped and the producers' contents were moved to Channel Awesome.
The shows promised here still have no sign of being completed. Even people who donated have had no word of anything. Some people even contacted Indiegogo to see if it isn't some elaborate scam. Later Saved from Development Hell, as at the very least the pilot for Pop Quiz Hotshot was released.
Keep Circulating the Tapes: Various contributors have works that aren't easily available. Some contributors' videos have vanished altogether following their departure from TGWTG or Blip, have been lost in the Blip purges or have been taken down due to copyright issues or other reasons. After the original TGWTG website went defunct in December 2014, any content that wasn't moved to ChannelAwesome.com also qualifies.
Promoted Fanboy: Many of the contributors were already fans of the website and featured on Transmission Awesome's (Rollo T also being an example of this trope) Awesome Blog of the Week segment before being picked up.
Saved from Development Hell: Blistered Thumbs, after spending more than a year with plans for a site, launched in the early hours of November 7, 2010. However, after 3 years of operation, it closed in January 2014. All of their contributors were moved to the TGWTG website.
Schedule Slip: While Doug and some of the other producers keep a tight schedule, a good deal of the team only sporadically submit movies or anything else. Of course, most of them do it as a side project, not as a full-time job.
Obscurus Lupa's story of her departure reeks of this. First, Mike Michaud (and later Doug Walker) ripped into Lupa for putting extra midroll ads into her videos, saying that it was hurting everyone else by making people use AdBlock, even though she needed the midrolls to pay her bills. Then, Mike and Rob Walker forbade Lupa and the other reviewers from promoting their Patreon pages until a bad PR incident involving Suede forced them to relent. Finally, Mike and Doug tried to chat with Lupa while she was away from her computer and didn't know they wanted to speak to her, and waited fifteen minutes. When she got in touch, they told her she would be let go and have her videos removed for "ignoring them." The move clearly backfired as it caused Phelous and Andrew Dickman to leave the site in protest. Kyle Kallgren also left about the same time, but for unrelated reasons.
Mike "The Birdman" Dodd was dropped from That Guy with the Glasses without being told, and he only found out about it a few weeks later when he tried to submit a new video to the site. This appears to have happened to Benzaie as well, as none of his videos were moved from the old TGWTG site to the new Channel Awesome site.
T.J. Kincaid (The Distressed Watcher) claims that he started to get this treatment after Mike Ellis left the company. According to him, all of his new videos were pushed to the bottom of the upload feed, despite him being one of the more popular producers on the site, which led him to start to lose interest in making content. It came to a head when his "Gayest Music Videos of the 1980s" video was rejected - he initially thought that the channel heads had mistaken it for being homophobic, but was later told that it wasn't uploaded because Channel Awesome thought their audience would be too homophobic to accept it. Shortly after, he was called into a meeting with the company heads who told him that they'd be letting him go because they were afraid that his YouTube alter-ego (The Amazing Atheist) would scare off potential advertisers to their site.
Inked Reality was talked up as being split into a separate site around the time Blistered Thumbs first split off, but it was put on the back burner. With the closure of Blistered Thumbs in January 2014, and the moving to the new Channel Awesome website in December, it looks like the plans on it were fully abandoned.
In a 2009 interview with the Chicago Sun-Times newspaper, Channel Awesome CEO Mike Michaud mentioned that he had at least 300 ideas for new shows to make for That Guy with the Glasses. What they are, we'll probably never know. The article also mentions Barfiesta, a website dedicated to Chicago nightlife that was operational for a couple of months in late 2009 before shutting down.
Pan Pizza was picked up by TGWTG during the 2014 talent search. However he ended up missing a Skype call with the management to discuss his being added to the site, and was dropped from Channel Awesome without having uploaded a single video.