I wonder if that's all there is to this; I find it hard to believe that StudiVZ actually copied directly from Facebook. Maybe they did in the early days, but I'd have thought that at the very latest the due diligence before acquisition would have found any such cases.
If they have any success with this because the site is "similar" then that would set a precedent for about a gazillion other websites.
If they have any success with this because the site is "similar" then that would set a precedent for about a gazillion other websites.