What happened to Socialtoo?

Buzz has been a tool within gmail which I had been reading ever since it is active. I would say that its posts have been a must-read for me every single day. I added very few people on buzz. Among them my most favourite and most read articles are the one written by Louis Gray.
His posts are a combination of knowledge and opinions based on the ones he follows and he also adds his own observations which also gives us a different perspective.
I never miss to read his posts and visit websites he suggests.
The most recent such post was about the website socialtoo.
That raised my curiosity and went to the site but was surprised to find that it is temporarily unavailable.