Simply adds distance and duration to profiles and quick-matching for both OKCupid and Plenty-Of-Fish.
This extension was created due to my frustration with the high-rate of which I was matched with people too far away for my busy schedule. It has provided much assistance to me and I'm making it public even though it's very limited in functionality in hopes it may aid other people with this exact situation.
I may extend it's functionality as I find other desired improvements or kill the entire project once these sites enable more rigid filtering.
Feel free to send pull requests or request new features. Who knows, maybe it's bugging me too! :-)