Swype is one of the sliding inputs for Windows Mobile. There are SlideIT and ShapeWriter too.
[pull_quote_center]With one continuous finger or stylus motion across the screen keyboard, the patented technology enables users to input words faster and easier than other data input methods—at over 50 words per minute.[/pull_quote_center]
What is Swype anyway? Check out below video to find out. It is a really great way to input.