This site has a pretty big wiki, but there's no Tetrisconcept page. I reckon we've been around long enough, and are well known enough (among the Tetris community anyway) to have our own page in our own wiki. Or does that seem a bit full of ourselves to you guys?
it definitely passes the pokemon test (if a topic is as important as the most trivial and obscure pokemon, then it should be covered). maybe an article for general tetris websitery (remember tetris lovers anyone?).
I would go a step further and say it deserves a page on wikipedia. Tetris concept is the leading tetris community, or is 2ch bigger? or is it just tetris? and if we all made wikipedia accounts and argued for it to be kept, it would be.
If you're going to import guidelines from Wikipedia, consider also that Wikipedia is not a web directory. Web pages should generally be listed in the articles whose subjects they cover. For example, gilly's site goes on a TNT-related page that uses it as a source.
I'm with Tepple on this one. Maybe just a "who we are" and a "history of of" type thing on our own wiki, but keep it off wikipedia.
That's probably a good idea, so people don't have to go stumbling through the wiki. And maybe caffeine could restore all the old content?