Handy

As a math grad student, this thing is really handy. I can leave my computer at home and wrtie stuff up at a cafe or library or whereever. Its also great for taking notes in a seminar or class. This wont replace your favorite way write LaTex, but it is compatible with your other LaTeX program using DropBox (maybe other methods too, I havent tried) and will definitely give you greater flexibility. Get this for sure.

sldifjsdfldf about TeX Writer - LaTeX On The Go