I'm old timer in web3d, and prone to telling kids to get out of my digital yard. My first work dates back to 1995, and since then I've done dozens of conference presentations and such. But often my work is greeted by "are you on drugs?" - SIGGRAPH moderator, "He's here to tell us how to make our work pretty" - host, ACM Web3D Conference, or "You can lick a monkey's balls but you can't call your work VR" - SIGGRAPH Art Gallery Chair.
I never got into SL, which may be an issue on this list.