We haven't found any problems with the feeder, more things we just want to point out so your aware of them before you buy it.

The attributes we display are as follows

• Product Title
• Product URL Link
• Product Description
• Product Condition (New or Used)
  
• Product Expiry Date (Data expiry, not for perishable goods)
  
• Product Brand (Taken from manufacturer)
  
• Product Image Link
• Currency (GBP for example)
  
• Product Price
• Product Type (taken from the category it is in, within your system)
  

For most products this is enough for Google at present, but you may need to add extra fields by hand such as ISBN numbers for books or actors names for DVDs. But in general at present, Google will accept just these attributes above, but the extra info may enhance your chances of being found in a search.

For example if you had just the above attributes and you were advertising the movie "War of the Worlds" with the star "Tom Cruise". The movie probably wouldn't come up in search for Tom Cruise, but it would if it had another attribute called "actor"

But like i said, it wouldn't stop you uploading, it just may limit your search-ability. 

For full information of which attributes can be used, please visit Google below

http://base.google.com/base/help/attributes.html