My first name is on the unusual side; people have to be told how to pronounce and spell it, and still often get it wrong. It peaked in the 1990s with 421 babies per million getting my name, which is still not a very large number.
Granted, my last name is common. It still mystifies me, though, that there not only seem to be at least six people in the US with my full name, but that they regularly get their email addresses wrong and put in mine instead.
Today's email is typical. At 3am one of my alter egos signed up for Tumblr, using my email address instead of hers.