Gmail allows for dot address matching. This is a *huge* problem that has never been addressed.
Apparently my first letter, last name gmail address happens to be pretty popular. So popular, I receive emails from at least 5 other people in my inbox. One from PA, another one in Florida, still another in New Zealand... I could go on and on, but you get the idea. Apparently, this seems to happen a bit to people.
Sadly, Google has no fix for it, no way to get it to stop. Their support address and site are useless, imho.
I have since moved all of my email off to my own domain and mail services not controlled by Google. I still keep the account open and forwarding to my new email address, so I still get their email, too. I do what I can to minimize problems by auto-deleting everything that hits my inbox that's obviously not for me.
Stories like this scare the shit out of me because, at any time, if one of those people I happen to receive email for suddenly decides to go into full-creep mode, I could be put in prison for a very, very long time. Not for anything that I have done, but for how gmail has been setup to allow for this.