Vote
Skype is a peer-to-peer Internet telephony network founded by the entrepreneurs Niklas Zennström and Janus Friis, also founders of the file sharing application Kazaa.
Votes:
1848
Skype
56.3%
Vote
MSN Messenger was a freeware instant messaging client that was developed and distributed by Microsoft between 1999 and 2005 for computers running the Microsoft Windows operating system, and aimed towards home users.
Votes:
1434
MSN Messenger
43.7%