Meetro
Back in February I signed up for Meetro. If you don't know what it is, "Meetro is the world's first location-aware IM client and real-time social network -- which means Meetro allows you to meet real people in your neighborhood." Meetro also supports AIM, MSN, Yahoo, and Gtalk protocols. It could be a replacement to Trillian (though Astra looks freaking awesome). The reason I quit using Meetro though, was the closest people to me were like 200+ miles away. Not exactly close. To be fair this was a few months ago when the client was in beta stages. They just released 1.0 so I decided to give it a go again. The result is still the same. Closest people are about 250 miles away. Maybe when more people hear about it and sign up it will catch up. I don't know. For some reason it doesn't want to connect to my yahoo account and I also wish it would have tabbed IM conversations. Maybe in the next release.