AllData is another source for recalls and TSB's. It will list them but for details you will need a subscription.
They do not have a T-SB beyond May, 2010. For example, they are missing T-SB 0207-10, dated July 29, 2010 titled "Poor FM Radio Reception."
Alldata can lag quite a bit. I used to have them and they just sent me an email inviting me back. They said they didn't have 2010 Prius TSBs yet. When I used them for my Corvette, I found that the Corvette forum was a better source for new TSB info. I think Priuschat will get the word out that a TSB exists before Alldata does for Gen III Prius. If you want to see the actual wording of the TSB and it's acceptable to wait up to a year for it, then Alldata is good.