Hellotxt, the service that lets you simultaneously update your status and read your friends' status across many services, has now released an API. There is a long list of microblogging and social networking sites that Hellotxt interacts with, ranging from Facebook and LinkedIn to of course Twitter and FriendFeed (see their home page below).
You follow me, I follow you. If you want to do that on Twitter from now on, you’ll have to do it manually because among recent updates to its developer guidelines, the microblogger put an axe to auto follow. In other news, Twitter loosened up its display requirements.