Some of the contributors to the internet includes Google,Yahoo and Microsoft. They had contributed a lot to the development of Internet. Recently i had read that Goldman is going to invest in facebook and valuate it at 50 billion$. Truly speaking what facebook offers is already present in the internet world before the invent of facebook also.They just combined it into one site and created all that hype.I will agree with this fact that twitter really introduced something new but facebook nothing.Please don’t get offended as this is only my opinion.