We sample data from the entire network of Disqus (which is over a million sites).
I may be wrong (as I'm not on the marketing side of things), but I believe when we're saying pseudonym we're saying "not Facebook". Things that let you choose whatever name you want, and not require your real name/singular identity.
Thanks for following up. I think you're confirming my assumption on the definition of "pseudonym", but correct me if you disagree.
Oh, and since I seem to have zeeg's attention ... why is it that every site I care about works just fine on my browser (Chromium/incognito mode/AdBlockPlus) but Disqus comments never load (I just get a "Disqus" spinning/loading GIF for ever)? I have stopped commenting on BoingBoing because it switched to Disqus and I don't care enough to debug.
If you don't have JS disabled like zeeg mentioned, AdBlockPlus is a red flag. Can you try incognito mode with no extensions enabled? If that doesn't fix this reach out to our support team at http://disqus.com/support and we'd be happy to lend a hand.
I may be wrong (as I'm not on the marketing side of things), but I believe when we're saying pseudonym we're saying "not Facebook". Things that let you choose whatever name you want, and not require your real name/singular identity.