The typical Web user might not realize they’re looking at apples and oranges when they get their search results. Knowing the difference enables a searcher to make a better informed decision about the relevancy of a result. Additionally, because the paid results are advertising, they may actually be more useful to a shopping searcher than a researcher (as search engines favor research results).
Crawlable is nothing new to anyone in SEO; this simply means that the structure of our pages allowed for all of the most important content to quickly and easily be crawled and indexed by search engine robots. It actually sounds easier than it is… ensuring that the content is rendered (code wise) in the most ideal format for robots to parse takes more consideration than just laying out your div’s to properly render your designs.
Historical refreshes of content is a good thing, especially if some of your content has expired. Note, this does not mean re-doing your content; simply refreshing it to bring it current if it isn't already evergreen content. Look at ways you can update outdated content on your site to drive more traffic through visibility on search engines like Google.