Greetings to all. In my experience, I've invited many many friends since Jan 2007. The main problem is with new users who have never played computer or video games, they become totally frustrated just trying to learn the controls. Also, unless they evolve their neurological circuits, they are sadly stuck as passive (non-interactive, non-creative) media consumers. People in Second Life and other virtual worlds are evolved. Timothy Leary in his book "The Game of Life"* describes the neurological steps of human evolution, right after the stage of someone totally wired in as a spectator (electronic media consumer), comes the stage of interacting with electronic media, creating music, video, digital 3D objects and worlds. Much love to all SL creative cybernauts. Have fun.
*"The Game of Life" PDF https://3white5star2.files.wordpress.com/2009/05/13077663-timothy-leary-with-robert-anton-wilson-the-game-of-life.pdf