Feedburner, one of the earliest players in the RSS world and one of the most well known, was recently purchased by Google.

You can read the first-hand account in the official Feedburner blog.

This is a huge endorsement for RSS.

Between Microsoft's strong support for RSS in Outlook and Vista, coupled with Google's endorsement of RSS via FeedBurner, this exciting new medium is going to see a surge of attention and usage in the coming year.