This Week in APIs- October 9-15 »

"Are you there, endpoint? It's me, POST request." Check out what you missed this week in API action.

Great dive into the new Facebook Groups API by Josh Constine over at InsideFacebook. Learn about how it works, what you can do with it and if you're ready to start playing.

Best Buy announced that its API will now allow customers to make transactions on 3rd party apps or pages- no more routing to the Best Buy site for purchase. For retailers, allowing customers to view and purchase merchandise in the same place is a best practice. Great move.

Our own Mike Debnar has an article out in the E-Commerce Times called "The Rebirth of E-Commerce in the New Internet," a look at how retailers can innovate using APIs to reach the mobile, multichannel and app-driven web. Includes three rules for doing APIs right!

Hot New APIs and Developer Candy

• YouTube has added PubSubHubBub to its activities feed, making it possible to have video data pushed to your apps- no more polling! ProgrammableWeb's got the scoop on how you can get to real-time with your video apps.
• SimpleNote's got a new API in private testing that you can sign up for here. SimpleNote provides an easy way to keep things like lists, notes and instructions.
• The Next Web loops us in on a fun new API from Wibiya, a site that provides websites with toolsbars for social and sharing. They are on the hunt for some innovation!

What'd we miss? Shoot us a note on Twitter. And if you love APIs, remember to get your free "I <3 API" stickers.