10 keyword phrases in Google Base

[Hubie]

In the feed there are columns for 10 phrases you can put in there. Mine have been blank forever.

Do these effect your listing a lot? For those of you who do enter keyword phrases here...what do you put?

Title of product? Manufacturer? Or a search term that is relevant to the product?

With over 2,000 products in my feed, i'm going to hold off until I know that this will yield results...