I’ve seen way too many snarky comments on political blogs which people won’t stand behind. Sure, there are good reasons to protect people in certain situations (whistleblowing, for instance). But, I think anonymity is often employed to try to control public perception. Or in some situations as a license to say things which one isn’t comfortable saying in public. (I’ll admit, there’s value in that- but let’s be a bit more bold and humble when need be).

For me, it usually has the opposite of the intended effect- I trust the information way less and am less apt to pay attention. Put a name behind it and I’ll pay attention.