I don't think a wiki would go ignored entirely. There are several communities on here that could benefit from it. !anarchism, !marxism, !books, !tactics, !technology. A lot of posters might never go there, and for a lot of subjects there are much better resources which already exist - but it would be nice to compile a knowledge base which is a little bit less ephemeral than threads which come and go in a day.

I agree with everything else though.