Spotchat is free with no ads, and there's no account required to chat!
Places you can use Spotchat:
College Dorms - chat with other students in the same dorm as you to find out what's happening on campus.
School - chat with other students at the same school, but in different classes than you.
Sporting Events - chat with other fans of your favorite sports team, or you could troll the home team.
Work - chat with your colleagues at work to collaborate on projects, or just to pass the time.
Hiking, Bicycle, Dirtbike, or ATV trails - chat with other riders at the same trail as you. You can report the conditions of the trails so other riders know what to expect. If you are lost or injured you can get help.
Events and Conferences - chat with other people at the same event/conference as you.