After yesterday's post about people not getting Unshelved by email, I got a bunch of responses from folks who stopped getting their RSS feed, mostly on BlogLines. Back in January the address of our RSS feed changed to http://feeds.feedburner.com/Unshelfeed
The old address redirects to the new one, and so most RSS readers automatically picked up the change. But not all did. So try updating to the new address and hopefully everything will work out a lot better.