"There is nothing preventing Facebook from being the next Myspace" You could make a similar argument about Google becoming the next Yahoo! when someone devises

"There is nothing preventing Facebook from being the next Myspace" You could make a similar argument about Google becoming the next Yahoo! when someone devises a better search algorithm/interface. Most technology stocks are high risk propositions, with the exceptions of huge multinationals like IBM (their size and government contracts make them harder to challenge).