I'm a little confused about what a location choice means.
I think I understand -- if we choose 20's Chicago, then the participating comics either draw a 1920's (or 2020's

) era strip on that day, either by time travel, by having a "movie shoot", a dress-up party, or a non-canon episode, etc.
But what does it mean if we choose CameoComics?
... Actually, that's probably the only one that I don't really understand.
"So my Mom left me a huge heap of molding, rotten, decaying, puss-dripping zombies ... How cool is that?"
"So what is your advice to me?"
"Stop doing stupid crap."