Did you click it?
in reply to a message by Heidi
I'm not sure that I could give a better explanation than the site could. It's a pet form of Ava, and it's also the name of an area that an ancient (or close to ancient) saint served in. Here's some info:
http://www.karmel.at/eng/teresa.htm
http://www.karmel.at/eng/teresa.htm