What can I say? AVATAR is an outstanding MUD. I've played many and I to say that this is one of the best by far.
Although I must admit that when I first started playing, I felt a bit left out and lost. But, I kept playing because I was having fun, regardless of my need for attention. ;p
The more I played the more I got hooked, and the more I got to know the other players. Now I am hooked for good! The people are uber friendly and helpful and I love the social atmosphere here. In some large MUDs that I've played, nobody talks to you! But here, they do. I love that.
If you want to play a MUD that is not only fun and enjoyable, but friendly and challenging as well, then AVATAR is it.