I refuse to upgrade to Skype 5 after trying it once and accidentally upgrading a second time when the app tried to auto upgrade itself. The horrid UI combined with Skype's stated desire to bring ads to the client makes me search for an alternative which sadly there isn't. In a business setting I would say that 90% of the time Skype is used as an IM client because of its working persistant groups and functional file t…
What's missing from skype that isnt provided by AIM or GTalk? Is it the ability to make phone calls?
And I am not sure you are in a position to tell a client "sorry, we would rather use GTalk or Jabber!".