Nimbuzz is a popular IM client for PC and Mobile. Nimbuzz posted in their official blog that they have removed the Skype support. Nimbuzz told that the folks at Skype asked them to remove their service. The same thing happens with Fring also. Skype is now removing its support for third party apps. Nimbuzz said
Yes, it’s true. Skype will no longer be accessible via Nimbuzz starting October 31, 2010. Why? Skype asked us to remove support for their service.
Skype’s decision to ask us to stop supporting their service seems to be part of a strategy to disconnect all open third party support.
Nimbuzz users can use NimbuzzOut instead of Skype.