Well, not personally of course, but someone could acccording to a news item on BBC News entitled:
Web attack knows where you live. Read the entire article
here.
I wrote a little post on one of my weblogs on how to disable geolocation on Apple Safari, Apple iPhone, Firefox, Flock, Google Chrome, Google Toolbar and Opera.
See
here.
Additional entries are very welcome.
[
Edit: Updated this first post for additional programs]