Checking the site now...

Well, the site's main page does take quite some time to load. If your interest lies mostly in the forums, you could bookmark that as your entry point to avoid some slowness. With my N800, navigation within the fora isn't snappy, but I'd consider it acceptable. Mind you, my standards may not match your own.

With my standard web browsing setup--zoom at 100%, "Fit width to view" off, and the browser not full-screened--I can scroll horizontally slightly to fit the message text plus all but the left 10% or so of the avatars in the screen's width. If I full-screen the browser, then the entire content column fits, but I hates full-screen. Either way, finger-drag scrolling works well.

In the end, what matters is whether the device fulfills your needs and expectations though.