In this post I will show you how to implement the Product Schema Microdata for your product pages. Now this tutorial is for 1.5.0, but if you’re sharp you can easily implement it in other Zen Cart versions.
I have said over and over the major search engines, Google included, DO NOT use the keyword tag…. Like talking to the wall. So, to finally put this subject to rest and answer this with absoluteness… Matt Cutts has clearly stated in no uncertain terms that Google Does Not Use the Meta Keyword Tag to Rank Websites!