Check out these cool SL web browser beta videos I found on YouTube from SL residents that have successfully logged in and exploring the new web based experience this week. There are at least 30 SL destinations to visit when using the online web-based experience apparently. There are limited controls and things you can do in the SL Project Skylight Beta web-based experience.
First visit to Second Life from the web
Project Skylight, the Web-based viewer for Second Life
Secondlife Web Viewer Beta use
Web based Viewer (Beta) – Second Life
sl web vieweer