There was a simple question:
I’ve got an ecommerce store. I’m trying to figure out if I should spend time getting Google Products / Base / froogle (whatever it’s called) set up for all my products. Sounds like a lot of work and a huge question mark if it will bring in sales.
Does anyone have experience, good or bad? Could save me a lot of time, or make me a lot of money!
And the answer was only the one:
It’s free, ultra targeted traffic. It really doesn’t get much better than that …

How to know what Google Images keywords people are searching for in Analytics?
If the people came using regular search engine, you will see it in Traffic Sources -> Search Engines or Traffic Sources -> Keywords. But if he came from Google image search, he will not be tracked. He will be in Traffic Sources -> Referring Sites as images.google.com. Google analytics has a feature to add custom search engine, so now we will add it.