Everything around you that you call life was made up by people that were no smarter than you, and you can change it, you can influence it, you can build your own things that other people use. - Steve Jobs
Twitter began in 2006 on the premise of an individual sending a SMS to a group of people. The rest as they say is history. That one idea to send a single SMS to a group of people spawned into what we now use to communicate our thoughts, frustrations, breaking news, affiliations to groups, and a host of other things. There was no such thing as #FF or #follow. Hell, there was no such thing as a hashtag until Twitter entered our lives. Now we hashtag just about everything.
I am not sure that I completely agree with Jobs when he says ...by people that were no smarter than you... but the idea that anyone can create anything and bring it to market is true. In the case of Twitter a person was able to create something that no one needed and turned it into something everyone who is anyone uses. That, my friend, is no small feat. It is almost a kin to selling ice to the Eskimo.