FeedBurner, which we've been using here for some time, has been bought by Google. What hasn't been bought by Google lately?
I like FeedBurner, which provides a simple way to give your RSS feed a little more juice. I also use FeedBlitz, a quick way to allow users to sign up for e-mails that contain links to your news stories. Both are quick and simple.
The part of the acquisition that has me most interested is this, from the FeedBurner blog:
"By combining our market leading feed metrics with Google's market leading site and marketing analytics, publishers now get a comprehensive, 360-degree view of their audience. This 'total perspective' has long been a goal of ours, and we think our combined analytics offering is going to provide publishers with previously undiscovered insights and opportunities."
I think there is real potential there for improved stats about who is looking at what and how, on your site.