Actually we believe strongly in identity choice -- particularly pseudonyms -- as we've found many of the best contributions do come from those that aren't necessarily using real names. We did some research on this a while back (http://disqus.com/research/pseudonyms/). Publishers can allow guest commenting if they choose in addition to the proprietary or social login options we offer.

That said, we do think Disqus is uniquely positioned to help with quality control. In addition to all of the granular controls and settings in the admin panel (e.g. blacklisting, crowdsourced flagging, state of the art anti-spam, etc.) the new Disqus has a more sophisticated visibility and global reputation system built in. On the front end, our new default quality sort uses voting and other signals to understand which comments should be most prominent at the top of the thread vs. sunken below or collapsed. On the back end moderation dashboard, every comment in Disqus now has track record information about that commenter’s prior contributions, e.g. # of days commenting, # of comments, # flagged, # of votes, etc… not just for your site but for all the other sites across Disqus. (tbc...)