Yesterday Google announced that they have renamed Froogle to Google Product Search. The change is explained on the official Google Blog:
Froogle offers a lot of great functionality and has helped many users find things to buy over the years, but the name caused confusion for some because it doesn’t clearly describe what the product does.
I don’t think that’s why they renamed it. I think Owen Thomas is right to point out that Google’s marketing is run by engineers. Froogle was/is simply a subset of search in general, so why not name it as such?
Think about it. They have Google, Google Image Search, Google Book Search, and Google Blog Search, so why not Google Product Search?
You could almost use the following rule for the way Google names products:
Is search the core feature of this product?
If yes then call it Google _____ Search
If no then call it Google _____
Obviously not all Google products fit into this rule, but most do.
Read: Google Blog