I was going to say that pseudonyms are no help anymore, because other people will tag REAL stuff and point it at your pseudonyms. For example, I have NEVER put my real name on my blog. But search for my name on google and my blog is the first result. And it sure doesn't take much work to find my name from my pseudonyms either.
(This may have been addressed in the article, but I couldn't read it because it started with the word "Boffins")