DXL - 12:04 am on May 16, 2013 (gmt 0)
If I do a Google search for a popular cooking recipe, I notice that anywhere from 2-7 results on the first page include image thumbnails. I maintain a few cooking-related websites, so this brings up a few things I'm confused about.
1. If the first ten results have a relevant food photo, how does Google determine which ones consistently get a thumbnail image?
2. Some websites allow recipe reviews/ratings (5 stars, etc). Does Google factor in the number of reviews or rating quality (4.5 stars) when determining how well a recipe page should rank?
3. If a well-ranked recipe has not had a photo for years, and one is added, will Google eventually notice and add a thumbnail for that result as time goes by?
4. Some recipe websites use original food photos, others use images already on the web (stock, etc). Is Google less likely to provide a thumbnail if an image isn't original?