Word Flow is the new name for the keyboard in Windows Phone 8.1. That keyboard includes a Shape writing feature where you swipe letters on the keyboard as opposed to the traditional touch-typing method. You slide your finger across the keyboard, pausing ever so slightly on the keys you want used and the software does the rest to create the words (here's our hands-on video).
While many will swear by Shape writing (it even set the World Record for typing speed), some aren’t yet sold on this new keyboard feature. WPCentral reader, PxuLL, has started this discussion over in the Forums asking if you use Shape writing.