We have one installation of magento with 15 different domains.
Recently, we noticed that our organic rankings have droppped on one of our sites, justnebulizers.com.
Then we noticed that one of our other sites, justwalkers.com, actually beats justnebulizers in the rankings for "medical nebulizer" which makes no sense since nebulizers are not sold on that site. Then we noticed that "Just Walkers" has been added to the end of justnebulizer page titles google shows in the search results.
We recently turned on full page caching, but can't imagine a reason for this mix up.
It seems to be only with google. Bing is fine.
Any thoughts of what we should look at. The source code for justnebulizers.com does not show just walkers. Our theme has different headers and footers and has been working fine for years.