Honestly? I have multiple accounts. This one is in my real name, but I also post pseudonymously. I do the same on pretty much every web forum I post on.
This is partly for historical reasons: in almost all cases, I had a pseudonymous account first. However, it’s also partly for flexibility. For example, if I’m giving a personal recommendation or criticism, then I always prefer to put my name to it. On the other hand, I am very conscious of privacy concerns and very careful not to give away anything I shouldn’t about other people or businesses. Posting with a pseudonym means I can still contribute controversial viewpoints or relevant information to some discussions that I wouldn’t be comfortable leaving on the public record.
For the record, I make no secret of having multiple accounts for any affected site admins, who in general could trivially identify any pseudonyms I use with a quick search of private e-mail addresses if they wanted to. Also, my pseudonymous accounts tend to have feedback via votes/moderations as favourable as my “real” accounts or even a little more so, and I never abuse multiple accounts by voting in ways I otherwise couldn’t. I’d stop if anyone running a forum asked me to, but that would be disappointing as I’m careful not to abuse the privilege and I think I can make more interesting/valuable contributions as things are.