Wikibiz, a section of Wikia, which is decidedly not a spinoff of Wikipedia (they are completely separate organizations). The idea here is that anyone can write an article, edit one, etc. Through this method, we hope to compile a database where you can find out anything. Or in Wikibiz's case, anything... about companies.
However, MyWikiBiz has a 37,000-article headstart on Wikibiz.