If you're looking to run a successful developer program, you should probably pay attention to Mathys van Abbe. He's the founder of Mobypicture (our Mobypicture API profile), which has just celebrated its 500th developer.
Eleven APIs have been added to the ProgrammableWeb directory in categories including Social, Data Mining and Graphics. Highlights include an API which provides DigitaltMuseum collection data in Norway and Sweden and an API to retrieve postal codes globally. Here's a rundown of the latest additions.