We have deployed and designed sites with well over 10 and 20K users with out any problems.

As Jtadeo states, it more so depends on concurrent connections, and with Clustering now available, which we switched all our servers too, makes larger sites more usable and scalable.

I checked out the gayguychat site, and its hard to tell what is what, as most of it isnt functioning, so who knows...

CyberXing