A few weekends back I finished implementing OAuth Echo support in Twaddle. This is the new, secure, way for you to use a third party site which communicates with Twitter for you. The classic example of this is photo sharing services such as TwitPic. Previously such services requires you to send them your username / password which isn’t a good idea. Using OAuth Echo you send them an opaque bit of data that uniquely (and securely) identifies the request as coming from you – the third party site then “echos” this data to Twitter to use for authentication.
OAuth Echo support – in conjunction with the new extensible architecture of Twaddle – means that over the course of a few hours I was able to provide TwitPic support within Twaddle. This support allows you to take a new picture with your phone’s camera (for devices with cameras) or to use an existing photo, both with preview support.