Texty is one of those weird ideas that seem so odd and simple that they must be tried, so someone did. Texty is a HTML Embedded Service in the same vein that a web form or photo display, the idea is to be able to compose a post or even a simple document and embed it into a page for whatever purpose you may have without knowing squat of code. the only requiered knowledge required is how to use a word processor in the same way you would write a E-mail at hotmail.
So, it is useful and a fast way to display a html document anywhere you want as long it accepts JS.
If you still donÂ´t grasp why someone would want this thing in Writetomyblog plus JS-Kit and you will get the concept of it better.