I think you're thinking too much, Alexandra... but then, that's just me. I don't worry about things like that probably because I've never made any part of my life a secret.
I've gone by my screen name for quite a few years so I suppose that might be a giveaway of sorts, although there was a time that I was battling to keep my screen name intact but there were too many others wanting and copying the same screen name. So... "would the real September Morn please stand up!" LOL
It's my feeling that the greatest damage would be done to the site itself rather than to individuals. But then again, I could be naive, too.
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Psalm 119:105 Thy word is a lamp unto my feet, and a light unto my path.