I wrote a too-short and too-cryptic piece last week that begs a more to-the-point treatment. 

There was the web and then there was Web 2.0. The difference is dimension. The first version of the web, though it was never the intention of the designer, was one-way. Publishing was hard, very few people did it. Lots of reading, not much writing. Blogging changed all that, writing got very easy, then richer, to the point where lots of professional publications now use blogging software. Mission accomplished. 

Texting was always a read-write medium, and very simple, but like 1.0 of the web, was one-dimensional. Texts were limited in how they could be combined and routed. Enter Twitter, a puzzle -- what the frack is it? We spent three-plus years puzzling it out, in the end it has a rather simple explanation -- it's the next version of SMS. You can do everything in Twitter you can do in SMS, and so much more. But essentially it feels very much like SMS, the same way blogging is very much like the web (so much so that that statement seems ludicrous). 

If this is true, what can be done with this observation? I think a lot.  

All of today's great handheld computers, the iPhones and Droids and Pres etc can do SMS as a very basic function. But what about a phone that's designed to do SMS 2.0 out of the box? How would that be different from the phones we're using today? A thought exercise, perhaps an opportunity for brain explosions. ">