This is our third and final reminder that Google is retiring the popular Google Base APIs in 12 days from now. They officially retire June 1, 2011.
Ronald from the Google Merchant team said in a Google Merchant Help thread:
Back in December, we announced that on June 1, 2011, the Google Base Data API will be decommissioned and it will no longer be possible to submit or access content through the Base API. We would also be retiring Google Base on the same day.
If you would like to submit your products information to Google, please submit your data feed to Google Merchant Center by visiting http://www.google.com/merchants.
To replace the Base API, we’ve introduced two new Shopping APIs: Content API and Search API. If you currently use the Base API for managing your products on Google Product Search then please migrate to the new APIs as soon as possible.
Please visit here for more information.
Forum discussion at Google Merchant Help.