Shadow isn't the BaldrThat was a full god, and Shadow is
The book and the twitter are an attempt to restore faith in the gods.After the battle the new and old gods were too weak to exist without some additional belief, so they first got Neil Gaiman to write the book and later the god of social networking started the bookclub on twitter to keep the interest in the book high.
As a corrolary, this book was made by the New Gods to ensure their survivalPossibly the reason the Old Gods continue to survive no matter what, while the New Gods die when the thing they repersent go out of style, is because the stories of the Old Gods are still being told. Smithing may not be as mainstream as it used to be, but as long as people continue to pass down stories he is in (such as the origin of the Greek gods), Vulcan will still survive. Railroads didn't have that advantage, so he died when not enough people took the train. Cars will not have that problem, so long as people read this book.
The two guesses above are both true; additionally, the whole idea was Wednesday's Plan BBecause logic dictates that a Bastard as Magnificient as Wednesday can't go without contingency plan. He had made arrangements so that when Shadow stopped the two fighting forces and his "war" went downhill, a record of the whole thing is delivered to Mr. Gaiman. The resulting faith brought forth by the finished novel was enough to nourish both the Old and New Gods and resurrect their dead (including Wednesday and Loki). Wednesday could then claim this is what he was aiming for all along, honest.
Mr Wednesday is Just Hiding.Although Shadow stopped the battle proper, gods still died in the opening skirmish, including between Shadow finding out itís a con and talking to the dis-embodied Wednesday and stopping the battle: possibly enough to fuel Wednesday's resurrection. Given his plan was scuppered by Shadow before he could gain full power, he decided to lie low and play dead.
Bast took over The Internet's position after the latter's death.It explains the popularity of LOLCats.
Loki is/was J. Edgar Hoover.He infiltrated the FBI during its earliest stages and cultivated it into something iconic. While in a position of power, he also engaged in randomness and rumor mongering so that people would still talk about the scandalous little details to this day - up to and including the belief that Hoover had nude photos of Elanor Roosevelt "just in case". At the same time, he actively worked against the reputation of that individual organization in preparation for his retirement, making sure to discredit it and any of its successors. Which would mean that he was the one who first told the CIA joke. By doing this, he was able to build up a suitable MIB mystique in American consciousness that it manifested the New-Gods-aligned organization that we all know & hate. Using his experience as Hoover, Loki took control of the organization and was able to reap the benefits of having an army of disposable little gods that are easily dealt with when faced with a Tomato in the Mirror moment. This is why Mister Town & co follow his orders. They know that he was Hoover before becoming Mister World, and that's explanation enough for them. The higher-ups always know better & are more scarily-competent. Even when the higher-ups are in jail.
Lakeside is Lake WobegonBoth are towns (beside a lake) in the Midwest that have thrived despite the depopulation of the rural Midwest. There are several other similarities, such as the genial and occasionally eccentric inhabitants.
The god in Las Vegas was Binbougami, the Japanese spirit of povertyExplains why he gets empowered by the loss of wealth and why he would request Soma as his price.
Low-key has some connection to Verbal Kint of The Usual SuspectsLet's see- Scheming character with multiple identities, one of which is the persona of a two-bit con artist. Both arrange their arrest so they can meet up with people in prison. The two admittedly look pretty different, but some amount of disguise going on seems pretty plausible.
American Gods and Eight Days of Luke take place in the same continuity.Gaiman has said he was inspired by Diana Wynne Jones, and Luke and Wedding have very similar personalities to Low-Key and Wednesday, just toned down a little for a children's book. Also, at the end of Eight Days of Luke, Wedding mentions battling other faiths for belief. And the Valhalla hidden inside a funfair is similar to various settings in American Gods. Thor is alive because they're the British versions, not the American ones, and are doing a little better (or were back in the seventies.)
American Gods takes place in the same universe as Percy Jackson and the Olympians and The Kane ChroniclesThe Greek/Roman Gods were smart enough to know that if they didn't somehow keep themselves known, they too would fade. So they did what they needed to in order to ensure their survival, and moved to America, had a bunch of children that they claimed and put into a camp, and told them to worship their parents (the Gods) all summer and throughout their lives. Unfortunately, because of the strong concentration of power focusing on not only the Gods, but also the monsters that came with them, their children accidentally brought the Greek/Roman monsters to life as well. The reason we don't see many of the Greek/Roman gods around Shadow is because they're busy with their own troubles that don't include fading out of existence. The Egyptian Gods had a different idea and decided that if there weren't enough people to worship them into a physical existence, that they would need to take hosts. So they did. The rest who could have a physical form appear much like Mr. Wednesday did to Shadow; in a human form that best matches their personality.
American Gods takes place in the same multiverse as The SandmanNeil Gaiman aside there was a blink and miss it cameo by Delirium.
The Lakeside sub-plot was inspired by the Blue Oyster Cult song Harvest MoonIf you've read the novel and heard the song, the similarity is blindingly obvious.
ThorI don't believe that BS about Thor committing suicide — dude's playing lead guitar in a folk metal band, and simply has no interest in the shenanigans of the novel. He's doing quite well enough, thank you, from room-fulls of people with hammer pendants/tatoos mosh while singing along enthusiastically to lyrics that mention him either directly or indirectly.
The events of the book, for the most part, did not take place in any non-metaphorical sense. But the gods themselves are real.This is said pretty verbatim in the book more than once, but I'm putting it here as another perspective on the potential Magnificent Bastard plans Odin made. Perhaps with Odin's influence, perhaps not, Mr. Ibis may have been integral in the book's writing (Gaiman may or may not have known about this in the process). His histories, as mentioned, are not necessarily literally true, but they are written to reveal a truth. And in ancient times, weren't stories of the gods originally written by divinely inspired men? Care was probably taken to flesh out the characters of the American gods as much as possible, and the plot (as interesting as it was!) may not have happened to them at all. After all, it's a metaphor for ancient beliefs struggling to survive in the era of technology, isn't it? The book takes care to mention that the literal truth and the metaphorical truth are vastly different and yet are one and the same, when it comes to the gods and other creatures like the thunderbirds. In sum, the book was written through the influence of at least some of the gods to inspire belief about them, as said above, probably through the meddling of gods like Odin. But everyone else might have been on board with the idea, too.