Well what can i say.
I have been playing this mud on and off since 95, and i still keep coming back. Since then its really got big. There are stacks of rooms etc to explore, quests to do (some of which are rock hard, but then again im a bit thick). It has some mad mad monsters.
Most of the people are really friendly and good sense of community abounds. Although like any community it takes a while to get into. So try MS, stick around for a while and im sure you will keep coming back for more just like i did.