Planet13 - 5:43 am on Feb 6, 2011 (gmt 0)
I understand this is a lot of guesswork, but...
Isn't one implication here that ecommerce sites SHOULDN'T have lots of other content on them? Wouldn't it imply that you should have a clear focus on selling products?
For instance, on one of my sites newer sites (just over one year old), we get slightly more traffic - but much less sales - than my ten-year-old site.
The ten-year-old site and the new site have more or less the same products. But the old site has a lot less informational pages. So the ecommerce pages get the majority of the traffic on that site.
The new site, as mentioned above, has more or less the same products, but, lots of articles pages, and that is where the majority of traffic goes.
Maybe the articles and other info are hurting the rankings? Or causing google to send the "wrong" traffic to the site?