I noticed this happening in my blog's logs months ago, for my blog's search form. I thought it was fascinating. The keywords it chose to search were generally m

I noticed this happening in my blog's logs months ago, for my blog's search form. I thought it was fascinating. The keywords it chose to search were generally meaningful words that occurred frequently on the site. I'm not sure if they were correlated with the Google search terms that hit my blog. The corresponding SEO tip is to make sure that your site's search feature works, delivers good results for the keywords and delivers the results to which you want Google to pay attention.