dslreports
Useful resource for broadband information - users there tend to be over-opinionated on all other matters AND unknowledgeable on those matters at the same time though. It's a kinda 50-50 forum, some good info and some good people.. but marred by too many newbies bitching about things they know nothing about!
I like getting good broadband info from DSLReports, but it's sadly full of industry trolls, flamers and newbies.