@ner You need an avatar. Mine's a seahorse that I painted in art class, then had framed for my mother's 80th birthday because she really liked it. It's been me for 13 years on Twitter.
@ner They use photos of themselves, or others, for satire or parody, or just for anonymity. Pictures of anything, really. I've always loved seahorses, and didn't want to be myself. Anything that you want to be you.