I noticed a few days ago that I was signing into my Gmail account using my “Google Account.’ Having never signed up for a Google Account, I simply assumed that Google was essentially calling that the Gmail sign-on service and would potentially be adding other services. I noticed this post on the Google Blog that details other features of the Google Account:
When you're signed in to your Google Account, you can use My Search History wherever you go. An additional bit of fun: try the handy calendar to check the level of your Google activity on a given day, or see related searches you've done over time. Look for the link in the upper right corner of your Google web search home page and results pages.
I’ll have to give these features a try now that I know they exist (I’m by no means saying that features like this are new, but they are new to me).