I don't see it often, but sometimes I perform a search in Google and in the results, next to the domain name I would see "6 hours ago". Sometimes even "17 minutes ago". Does it mean the last time the site was cached? Is there a benefit to having it say that? What can I do to take advantage of it to improve my rankings even more? Here is an example of what I am talking about. I hope you can see what I mean even though I blocked out everything around it. http://screencast.com/t/NGE1YjgxN Thanks!
Yeah, a lot of times this tag is for new sites, when Google just found and index the site, but also I have seen this tag on very popular sites, for example search for snow storm usa and you will see usatoday.com as #1 with the tag "1 hour ago" so this means that Google visit and crawle the site just 1 hour ago, so this page has fresh news about the storm