Technology produces a marketplace that is both fascinating and puzzling. The fascination comes with the incredible devices that are rolled out in a constant stream of “wow.” Puzzling in that some of these devices don’t seem to make a lot of sense.

Peek, a New York mobile start-up, has introduced the TwitterPeek. It is a device with the sole purpose of allowing you to post and read tweets. That’s it. Nothing more. And it goes for $100, with an $8 per month service charge after six months. Or you could spring for a life time of tweeting nirvana for $200. (Exactly how long is a lifetime in today’s digital world?)

This isn’t Peek's only foray into mobile messaging. There is also Peek Classic and the Peek Pronto, designed for email and text-messaging, but not for making phone calls.

It would seem that the functionality of the TwitterPeek is available on most smartphones. And certainly handheld WiFi devices, like the iPod Touch, can manage this as well. And better yet, these devices can actually do other things, like make phone calls or browse the web, or listen to music, or watch video.

If there’s a market, then there’s a market. Still, all-in-all, puzzling.

Image Credit: Peek