For years I have wanted a service that would send me updates from various sources on the net to my IM.
I am almost always online. Most services I use frequently have RSS feeds, however problem with RSS always was that you had to poll it for data. Yes, there are readers that will do that for you. But I have always wished for a service that would do this for you.
I found chatterous, it however was a bit sluggish in sending messages and you could only have one feed for per group. Friendfeed on the other hand was fast, worked well, allowed me to aggregate feeds into one channel. With this support for instant messages friendfeed becomes really handy. I am a fan!
If you have not tried friendfeed, maybe you should give it a try.