I've recently changed the way guest accounts are supported in myOSity. Previously, all guests shared the same account on the back-end, meaning that I had to disable certain features that required unique accounts - like chat. Now visitors who choose to login as a guest will receive a temporary unique account. Very soon I will be implementing an auto-join to a public chat channel for all guests, so that folks can experience the chat system and interact with each other in real-time.
I'm also in the midst of redesigning the web-services component of myOSity to take full advantage of the new "RIA Services" framework from Microsoft. After careful evaluation, I feel this is the right way to go for the long-term. Without getting too technical, using RIA Services will simplify the way that myOSity client/server interaction happens. I'm hopeful this will yield performance benefits, and also make future development easier and faster.