Imified is one of my personal favorites. Why ? Because they are very innovative.They don't release applications, but application interfaces. And that's where innovation is. And they have just aquired Feedcrier.
Through this acquisition, IMified will make use of Feedcrier's rock solid bot platform and super-fast feed alerting technology to offer a complete IM based solution for interacting with web services and presence based alerting.(Imified blog)
I am as excited as they must be – I can't wait to see what services will be added to the current ones.