The world's first Twitter mobile device made its debut on Amazon.com today. TwitterPeek, from New York-based mobile startup Peek, sets out to enable users to tweet on the go 24/7 without the need of a smartphone or data plan. The Wall Street Journal reports that the device, which includes a full keyboard, always-on tweet delivery, nationwide Internet coverage and six months of service, can be had for $100. After the six-month period, service costs $8 per month. For $200, TwitterPeek can be purchased without monthly charges.

Sharon Gaudin of Computerworld sees value in the product for avid tweeters and Twitter-friendly businesses. However, Gaudin notes that the gadget market has moved beyond devices that do only one thing.The benefit of a smartphone is that it limits the number of things folks have to carry around and stay connected.

PC World's Sascha Segan calls TwitterPeek a neat idea executed poorly. One market where TwitterPeek could find success is with teenagers with limited budgets, says Shiny Shiny.

Tweeter josho2001 sums up his opinion of TwitterPeek in less than 140 characters.