According to Tip: Customize your web clips :
… web clips display feeds (news headlines, blog posts, or pretty much anything in RSS/Atom format), ads and other information at the top of your inbox
I’ve got a couple of feed readers, but I don’t use them regularly and I think its just really cool that I can see them in my Gmail inbox, albeit 1 line at a time randomly from a list I choose.
Quickly add your own feeds into Web Clips…..
- Log into Gmail
- Click Settings, then Web Clips
- If you want, you can remove existing feeds by clicking the remove link
- To add your own feed URL’s just type it or copy/paste it into the “Search by topic or URL” box, click Search, then click the “Add” button for the feed you want to add. When you are done click “My Clips” to return to your list of web clips
- You can also browse the pre-selected feeds by category down the left underneath of “Browse clips in…”
So pretty cool, huh?