I have found a great website called meetup.com. Essentially, it is a site that is good for people to meet up with others that have similar interests. For example, I have joined up to meet people that are into photography, kayaking, adventures in general and hiking. It is easy and free to join a group.
I wanted to announce that I have started my own group called Cross Country Mountain Bikers for those that are between road biking and crazy downhill mountain biking, and like to find longer off road rides and would like to do it with others. If you like to do this, please join up. Rides are announced as they come up, either planned in advance or maybe the day before. I’m not totally sure how the whole thing works but I’ll learn as it goes. I wanted to keep it as low profile and spontaneous as I can. It’s supposed to be simple and fun. Announce a ride, go for a ride with friends, hang out after. All that good stuff. Have a look at:
http://www.meetup.com/Cross-Country-Mountain-Bikers/calendar/11422298/