IMVU is a short form for instant messaging virtual universe. It is an online social entertainment site and it uses 3D avatars to meet new people. You can learn more about it at http://en.wikipedia.org/wiki/IMVU.
there's a site that u can go to called IMVU.com and it should take u to this virtual world its like a.Its like an online dating site that you can play on and u can also have fights sex and get married. ;**)