Using wikis for a choose your own adventure format and time-travel shenanigans is pretty clever!
While I have used blogspot for my previous "works", I've been posting different stories in the same setting for a sort of "mosaic" style (not sure if that's the right time). Different people and situations in each story, but they all share the setting. I've also been going back and forth along the timeline, which has helped me figure out how the world develops. The original plan was a linear, ten-story collection, each story taking place in a different decade showing how the world's been changing in the background as the characters deal with issues in their everyday life.
That plan fell through, but I kept writing snippets, scenes, and the occasional full story, and before I knew it, I had a modestly developed world where the events the timeline started shaping how some stories went. This was never an intended thing, but just sort of organically worked out that way.
Now I find myself wanting to do the same on a multi-setting level, which, I'm not entirely sure if that's a good idea or not, but I figure as long as you regularly update an organized table of contents, it would work for new readers.