Firstly, Zen Cart users ….. GET AN SSL and stop being a contributing factor to insecurity, low buyer trust and general ignorance. In a nutshell Google is going to ding you ALL with a warning, even those who only accept PayPal. Rightfully so, while you’ve never been required, you should have been supporting buyer trust long ago…. Now you will be punished if you don’t. Rightfully so.
If you have doubted the need for fresh, related content on your store pages…. You better rethink your position! Google has improved the search results snippets to include “jump to” links to the page’s specific area containing the related content.