According to one very experienced and well regarded Internet expert, Dr Jeffrey Cole, this joining of sites may be pointless as Facebook could only have five years of dominance left in the social market before the next "big thing" comes bowling through and take over. Dr Jeffrey Cole hails from the World Internet project and predicted the demise of MySpace so if you're thinking of buying shares in "the social network" make sure it's for short term gain and not a long term investment.