I'm pretty sure that it is possible for anyone of any age to be able to join Second Life. Meaning that teens or possibly younger people will be exposed to the sexual things that are on Second Life. Sexual things like completely nude avatars that are detailed and that everyone is able to see. And may be exposed to sex poses as well. Second Life has a rating system of (G) General, (M) Moderate, and (A) Adult. Everyone I think may start off as (G) but it is easy to change the rating to (G) (M) and (A). Just go to the Online Website and lie about your age in 'Age Verification' to be able to change the rating to be able to go to Adult rooms and to be exposed to Adult things. You are only able to do the 'Age Verification' once. So if a person is a teen or younger and they do the 'Age Verification' correctly to their real age, then they can only do it once which will prevent them from going into an Adult room until they are truly and Adult. I'm currently 20 years old but I was 19 when I lied about my age in "Age Verification' to be able to change my rating to (G),(M), and (A), to be able to go to Adult rooms. Also in Second Life, there are certain rooms where people are able to take out weapons like guns and swords and actually be able to use them. Like to be able to shoot at people and at targets etc... When people shoot at people, no damage can be done that that person's avatar. All that can be done is annoying the person or just having fun. There are a few guns on Second Life that can shoot people up into the air and the only way to stop flying, is to teleport back to the same room, teleport to a different room, or to have a friend teleport you back to the same spot. One person on Second Life, that I didn't know, shot me into the air, I teleported back to the same spot and he continued to shoot at me over and over, which kept flinging me into the air. I got so frusterated that I tried to report him over and over to get rid of him, I tried to block him, but that didnt seem to work. Eventually he left and if I ever see him again, it will be paybacks because now I have the gun similar to what he had.
Second Life may be laggy for certain computers. Second Life would not play smoothly on my old computer, but it plays smoothly on the new computer I have which is like a gaming computer. If people are not able to play Second Life, then they may go to another virtual chat site, which is IMVU, which plays pretty well on most peoples computers. Look more into IMVU if you want. Oh! and on Second Life, there is an awesome Historical Museum Room called 'The Holocaust Museum'. There you can learn about the Holocaust and Learn what had happened in that time. So also Second Life can also be Educational.