Well, it doesn't look like anyone else is going to post a board for Popmundo, so I might as well.
I am actually very impressed with Popmundo. It doesn't really look like much at first, but I really enjoy the site. So far it is the only one I have reviewed that I log into almost every day. I have always been a fan of tycoon/life simulation games and this one was a pleasant combination of the two.
It certainly is slow starting up, but once you get a job and get that first paycheck, it really gets interesting.
One thing I also like about Popmundo is the "tutorial" they have when you first join. The tutorial is sort of mingled with a quest, called the Mother Tour. When you start out the game you are living with your mother. She gives you small quests that you must complete. Each of these little quests can be seen as part of the tutorial. Some of these are: getting your own apartment, holding a concert, purchasing a plane ticket, and etc. By completing the Mother Tour you are slowly learning how to play Popmundo.
Popmundo is certainly a site that I would suggest to others. If you ever venture to Nashville on Popmundo, search for "Misty Davies."
(You get to choose a username, but it is just for logging in. When you create a character you are given a list of possible people. Each person has their own flaws, though from what I see these are just personality traits of the specific person and do not actually affect gameplay.)