I've been a member of WBF for a while and its been a very positive experience- so has Audiogon. WBF has a little different vibe. It can get a little salty-audiophiles seem to get very emotional about our hobby-but I have rarely seen the nasty personal insults that are common (and sometimes highly entertaining) on this site. Maybe more discussion of high end stuff on WBF. Good people on both sites willing to share ideas.
I suspect posting a link violated some rule on WBF-you might read them to see if that's the case. WBF has subgroups for different brands, but there seems to be less blatant selling on that site, for better or worse. At any rate, its a site like this one-populated by folks who are passionate about audio, just a little different culture.