As a test I looked for "lenovo x300" as I know that similiarly named products exist, but one of the first opinions came back as "The Dell Latitude X300 is a very good choice for those who want prime performance with premium..." so while I think it's a great concept (and it will definitely get better!), I'd take a good look at the model you're using to ensure that it indeed disambiguates as necessary.
Overall, I really like the idea, and I think it's visually implemented very well. It packs a lot of data on to one screen (nicely).
I tried out a couple different sites. twitter, pownce, evite.
It seems like it was somewhat on spot, twitter having about 75% favorable reviews, rest due to downtimes. However, pownce had 100%, which seems like it probably didn't trawl the web for enough mentions of it.
Evite, had about 20% hates. I had expected it to be higher. I too hate eVite.
I remember this sort of thing before at another startup, and its processing was faster, but I don't know where they disappeared to.
It wasn't working for my first few searches, but I tried "Cybershot" and got some results, I could see how this would be useful in looking for reviews.
I'm not sure what to say about the use of a cartoon dog in a search tool, however...
However, you need someone to work on the English right away. "Opinion Analizer" is... not quite what you think it means.