A lot of development in Gamecube homebrew went on there, emulators for a dozen systems, utilities like make-multi, sd image dumper, etc. There were a few people starting work on a N64 emulator too.
It'd be nice if they brought some of their work this way. I'd hate to have to sift through yet another forum site.
I don't know why anyone would sue them, when there are plenty of forums with much larger audiences. GBATemp here has a ton more active users to put the scare into, if that's what they were looking for...