Imvu isn't going anywhere, been there since b4 its buggy beta. As said before the community is too large, the rank, despite the issues it has is still pretty damn high.
Imvu always has a down time, it comes in many different versions:
Schools starting, holidays, people realize they need to get a job, and significant others figure out that their loved ones are having affairs lol, just to name a few.
However there will always be, misunderstood teens, lonely house wives, and hubbys, those that need relationships, social media whores, people that need an escape and many others with their mundane reasons. Thus when one batch leaves, another enters, its a revolving door that never stops. But it gets really good when theres a revolving door batch and also returning members that realize they will always like imvu.
"If you don't like imvu right now, wait a few months" lol