An option to set a default location would be handy.
...even more cool would be the ability to tag locations (eg home, work, Joe the best friend) which you could quickly select from the location pup-up bubble
...maybe even pull addresses from gmail contacts to quickly see where you can meet with friends (ok, gmail contacts may be a bit too extravagant).
Morgan Booker commented
You could save the URL Differently for each default location