From an email from IFTTT, a couple of hours ago:
We have been busy bringing improvements to the IFTTT platform. Because of these technical updates, some Channels will no longer be supported.
On March 23rd, the following Channels and their Recipes will be removed from IFTTT: App.net, BuzzFeed, Campfire, Diigo, Etsy, ffffound, Last.fm, Readability, Yahoo Fantasy Sports, and Yammer.
Ahhhhh…