It's like an endless home decorating magazine! Lots of comments and suggestions, cool things to try and plenty of eye candy.
Some of my favorites from today...
Out With the Old, In with the New kitchen
Basement Family Room with Aqua Glaze & Cool Tree
I'm still trying to figure out if you can create a portfolio of rooms you like or bookmark other users as favorites, no luck so far. It does say 'Rate My Space ' beta so maybe improvements are on the way. In the meantime, go ahead and explore!