I think this "mark on humanity" talk is rubbish. I mean, what does that even mean? Twitter is just a service that allows people to connect and publicly talk to each other on the Internet. That's it.

There have been previous, less successful iterations of the same common idea. Twitter hit critical mass in terms of it's user base and has created neat and unique nuances that make it's version of human-human communication on the web innovative and fun and successful. Kudos to them. It's the social network du jor for fast communication. But there will eventually be other iterations in the future. Some more successful, some less. Perhaps some new incarnations from Twitter itself as they evolve their product over the next decade.

If Twitter has a "mark", it's that they created a way to "flatten the world of communication" and take discussions to a realm where everything and everyone are drawing on the same board at the same time.

But in the end, these are all services that facilitate human interactions that have existed for thousands of years. We've just taken those interactions and put them all on an even plane at the same time, and exposed them in a way that is amazingly accessible.

So when we talk about "Twitter changing the world", I get confused. It's always humans that change the world, we're just using a different vehicle and techniques to get there. So... Rhetorical flourishes and hyperbole aside... How was Twitter changing the world, and how is it not anymore...?