I have been in SL for 5 years now, and I honestly think this is a bad idea. yes, there are some (but very few) points where the teens will be able to learn and create things they couldn't on their own grid. BUT, and it's a big one, I can see a lot of teens breaking the rules, and lawsuits. I hope secondlife survives this, i am still on the fence. One side it's bad, the other side it is good. But i guess we all just have to see what will come of it in the end right?