Just to follow up... I have saved the query results to an xml file and there is no gm element in the feed. Per Google documentation content is set to attributes,meta.

Base Query Uri :
http://base.google.com/base/feeds/items?max-results=1&content=attributes%2Cmeta

xml results:

- <feed xmlns="http://www.w3.org/2005/Atom" xmlns:openSearch="http:// a9.com/-/spec/opensearchrss/1.0/" xmlns:gm="http://base.google.com/ns- metadata/1.0" xmlns:g="http://base.google.com/ns/1.0" xmlns:batch="http://schemas.google.com/gdata/batch"> <g:customer_id type="int">3200332</g:customer_id> - <author> <name>Google Inc.</name> <email>b....@google.com</email> </author> <generator>GoogleBase</generator> <id>http://www.google.com/base/feeds/items</id> <link href="http://base.google.com" rel="alternate" type="text/ html" /> <link href="http://www.google.com/base/feeds/items" rel="http:// schemas.google.com/g/2005#feed" type="application/atom+xml" /> <link href="http://www.google.com/base/feeds/items" rel="http:// schemas.google.com/g/2005#post" type="application/atom+xml" /> <link href="http://www.google.com/base/feeds/items/batch" rel="http://schemas.google.com/g/2005#batch" type="application/atom +xml" /> <link href="http://www.google.com/base/feeds/items?start-index=1&max- results=1&content=attributes,meta" rel="self" type="application/atom +xml" /> <link href="http://www.google.com/base/feeds/items?start-index=2&max- results=1&content=attributes,meta" rel="next" type="application/atom +xml" /> <title type="text">Items matching query: [customer id(int):3200332]</ title> <updated>2008-03-26T10:07:39-07:00</updated> - <entry> <g:application type="text">Google Base Website Importer</ g:application> <g:site_link type="url">http://www.itsallyouprinting.com/ productdetails.aspx?Productid=2</g:site_link> <g:price type="floatUnit">7.99 usd</g:price> <g:target_country type="text">US</g:target_country> <g:price_units type="text">EA.</g:price_units> <g:expiration_date type="dateTime">2008-04-22T09:13:10Z</ g:expiration_date> <g:quantity type="int">1</g:quantity> <g:image_link type="url">http://www.itsallyouprinting.com/catalog/ ProductImages/66/ProdImage_2.jpg</g:image_link> <g:customer_id type="int">3200332</g:customer_id> <g:item_type type="text">Products</g:item_type> <g:item_language type="text">en</g:item_language> <gd:feedLink xmlns:gd="http://schemas.google.com/g/2005" rel="media" href="http://www.google.com/base/feeds/items/846636153336180214/media" countHint="1" /> <title type="text">Mouse pad with memory foam wrist rest</title> <id>http://www.google.com/base/feeds/items/846636153336180214</id> <link href="http://base.google.com/base/a/3200332/ D846636153336180214" rel="alternate" type="text/html" /> <link href="http://www.google.com/base/feeds/items/ 846636153336180214" rel="self" type="application/atom+xml" /> <link href="http://www.google.com/base/feeds/items/ 846636153336180214" rel="edit" type="application/atom+xml" /> - <author> <name>It's All You Custom Printing</name> <email>anon...@base.google.com</email> </author> <category term="Products" scheme="http://base.google.com/categories/ itemtypes" /> <content type="html">Mouse Pad with built in memory foam wrist rest. Form fitting wrist rest supports wrist and provides relief from fatigue and pain.</content> <updated>2008-03-23T02:13:11-07:00</updated> <published>2008-03-23T02:13:11-07:00</published> </entry> </feed>