My favorite virtual community is Worlds.com. I was introduced to Worlds.com by one of the creators, Thom, and given a grand tour of the world and how to use it. It was a blast!
Unlike SecondLife, Worlds.com didn't make my browser crash. I was able to get into Worlds.com without any problems, travel around, change my avatar and chat with people without any major issues.
I had such a great time on my tour that I created my own avatar and look forward to creating my own Worlds.com home where you, my readers, can come and visit me.