It has been announced yet another instant messenger service is to end at the end of the year.
Windows Messenger > MSN Messenger > Windows Live Messenger service is to end in early 2013 but it will be combined into Skype so not gone for good.
It is up to debate whether this will be a good or bad thing. One thing I do note is that Skype was more aimed at the business user and Messenger for social use. It might not be a good thing to mix the two markets together.
I guess instant messenger services have come a long way since ICQ. Now Facebook chat service can now also be merged into Skype along with messenger it does seem this is aimed at being a way of Microsoft earning big bucks from Skype in the future.