Google Mail yet again added a nice feature, RSS feeds above your emails!
It's perfect for those you-don't-need-to-read-every-feed-item-feeds that you casually enjoy reading, I like this!
This is how it looks (I added the yellow highlighting) - by clicking the backwards/forward button you can easily browse through new feed items:
Google Mail Web Clips - RSS support for the email client I like best
The settings are pretty self-explanatory also:
Google Mail Web Clips - RSS support for the email client I like best
By using the search on that page you can easily add feeds that aren't in Google's standard lists (they added the most popular already for your convenience).
EDIT: How cool! When you switch from the Inbox to Spam, instead of RSS feed items Google will offer links to
Spam recipes! I just saw Spam Breakfast Burritos, French Fry Spam Casserole and Vineyard Spam Salad!!