I recently found and bought a porch swing through Google Shopping on ThePorchSwingCompany.com. The five-person Tampa, Fla.-based company feeds about 200 product descriptions to create product listing ads (PLAs). Chad tells me that since they began paying for the ads, conversions have increased -- not only on Google, but Amazon, too. Rimm-Kaufman Group Product Manager Todd Bowman tells us how to keep up with the latest feed specs. Last week Google announced several -- such as Image Specs, Unique Product Identifiers, and Merchant-Defined Multipacks. Read the article here.