What are the risks of Second Life

The risks of using the Second Life platform vary based on what you see as harmful. In some cases the risks could be becoming addicted, and spending hours online in a virtual world.

Other risks include being offended, as the level of free speech in-world is paramount, and controversial ideas, images, and talk are often abundant in any populated public area.

As far as technological risks, it is not possible to have your computer infected or harmed by any scripted object within the virtual world. The scripts are compiled and run on the server, so you don't execute native code, which would allow for potentially compromising the users machine.

So in summary, the risks of using Second Life are equal to the risks of using any large-scale multi-user web service.