If you're interested in learning more about how Google retrieves and displays RSS/ATOM feeds that end up on personalized homepages, the folks in Mountain View have just posted an FAQ about what they call Google "FeedFetcher."
Feedfetcher is how Google grabs RSS or Atom feeds when users choose to add them to their Google homepage. Feedfetcher collects and periodically refreshes these user-initiated feeds, but does not index them in Google's search services (feeds only appear in our search results if they've been crawled by Googlebot).
Optimising Digital Marketing Campaigns with Search, Social and Analytics
At SES London (9-11 Feb) you'll get an overview of the latest tools, tips, and tactics in Paid, Owned, Earned, Integrated Media and Business Intelligence to streamline your marketing campaigns in 2015. Register by 31 October to take advantage of Early Bird Rates.