You’re so right. Sometimes Google organic rankings can suddenly change and dramatically reduce traffic to your site. I’ve seen it several times before and Price Engines like NexTag can help keep traffic from taking too far of a dive.

You also mention that not all products will work on all shopping engines. Have you ever encountered a situation where the feeds being sent to the Price Engines stop containing certain products but the Price Engines continue to show those products and clicks continue to result? How do you get these products off? Why does this happen?

Your help would be appreciated.

Do you think another comparison engine could potentially list items in Google Shopping? A feed could be made listing the lowest priced item and the comparson engine’s landing page would be comprised of price comparisons.

This is affecting a lot of users and i’ve see the exact same although had to test it out to get more info.

The users are discussing this in the forum.

http://www.google.com/support/forum/p/base/thread?tid=05da2eaebf5bf77d&hl=en&fid=05da2eaebf5bf77d00046dbec97aa6a5

I’ve also upload some screenshots of what i’ve seen.