Second Life...?

The idea of 'Second Life' came up as I was researching the accessibility issue. This free online adventure has proven to help many escape to this virtual world (including many with disabilities, adults in group homes, and has helped many overcome social barriers). Has anyone out there had any experiences with 'Second Life' that you'd like to share? Just wondering what it's really all about! Check it out if you haven't already... http://secondlife.com/