Collects and sells data
App tracks location
No private setting
Unable to monitor
Allows direct messaging between strangers
What Imvu says, "IMVU is a 3D avatar-based social experience with the largest 3D world and catalog to customize your look and meet new people. Chat with friends, roleplay and join a virtual world with millions of others for free!"
What SGS says, "Stay off the virtual world and turn your dream world into your reality."