We have launched Fanlore, the OTW wiki for fan information. This one has been in the works awhile, and it's taken a lot of work on the part of a lot of people to bring it live. So thank you to everyone who has helped so far, and to everyone else...Now's your chance! Go sign up for an account and set up a user page to tell your fannish story: how you got into fandom, and your own thoughts on fannish life. Not to mention all that factual stuff on source media and stories and zines and communities and everything else that makes up this loose collective of people called fandom. It's a pretty blank slate right now, so go for it and add things. Give it a try.
Other people have talked about the Why of OTW for them, and a lot of good ideas have been mentioned: the need for infrastructure; the need for fandom to create their own spaces; the need to remember and the right to not be erased. ( and then I go on )