Rated 5 out of 5 stars
For version 4.9.2, the preview may not render properly in Google due to the release of Google Instant Previews on Nov 9 2010.
The version 4.9.3, not yet approved by Mozilla, solves that problem.
Used to be great Rated 1 out of 5 stars
It used to be a great addon.
Unfortunately, some sponsored links are inserted into the search results by this addon recently.
If this is the cost for using this addon, I will just wave farewell to GooglePreview...