I don't put my photo up either. I know of an old newspaper clipping that made its way online and of course yearbooks have as well.

The other way my photo has made it online is pictures with friends and family, generally facebook.

Luckily, between that and my name being shared by several people in my country who are more comfortable with online persona's, and no one is actually going to find my image unless they're trying really hard to specifically target me.

Your point is a good one and I know I'm lucky in that respect. I very much miss the days when anonymity was a major value in online interactions.