I would think search queries are getting less diverse now, especially with google suggest giving you autocompletion - I find it very often gives much better res

I would think search queries are getting less diverse now, especially with google suggest giving you autocompletion - I find it very often gives much better results to look at the top domain queries (e.g "online marketing strategies", "online marketing tips", "online marketing best practices" for marketing), look at the results, have a feel for what the right wording is, and then refine your queries. I find that much easier to do than randomly type the first sentence that comes to mind.