Comment on Old, but gold - "Strategy Letter I: Ben and Jerry's vs. Amazon"parentComments−niklas_a14ySkype: 880M users MSN: 330M users AOL: 53M users ICQ: 50M users Source: http://en.m.wikipedia.org/wiki/Instant_messaging
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Skype: 880M users MSN: 330M users AOL: 53M users ICQ: 50M users Source: http://en.m.wikipedia.org/wiki/Instant_messaging