If you’re thinking about expanding your Comparison Shopping Engine activity, or just want to get into a new marketing channel, Amazon Product Ads is now opening up to more categories, and when you click on our link here, you’ll get started with $75 in free clicks. Amazon Product Ads is Amazon’s cost per click comparison [...]

The Google Merchant Center has made some changes yet again. Some of these additions will be required, while others will only help your data’s quality.
You can find their press release about it here: http://googlemerchantblog.blogspot.com/2011/07/important-changes-to-google-product.html
Summary:
These changes will take place on 9/22/11.

A New Google Product Category – This is a new attribute [...]