Looks like Google has now decided to pro-actively promote Google Accounts. It has created a new web page that explains why you should use one and what all you can do with it.
One name, one password. Lots of free products. Take a look at how you can personalize and optimize your experience across all Google products.
When you have a Google account, you can search and get personalized search results, share photos with friends with Picasa, create your own maps with Google Maps, chat face to face with Google Talk, Create, edit and share documents with Google Docs, Share your schedule with Google Calendar, Track your shares and portfolios with Google Finance, get more storage for your email with Gmail, make free phone calls with Google Voice, follow world news with Google News, create webpages with Google Sites and more.
The best part is that with Google Accounts, you can get the same experience even when you use multiple devices.