With Swype instead of having to press each letter, you can just press (and hold your finger on) a letter, and drag it to the next letters that you need, without having to let your finger leave the touchscreen display.
To try Swype Beta site and register to become a tester. The beta is currently open to a limited number of people, and it’s available in English and Spanish, so if you want to give it a test drive, you can register at Swype Beta site to become a tester.. It’s currently a limited version, compared to what you’d get if you get Swype bundled with your phone. Supported resolutions currently include HVGA and WVGA resolutions only.
Swype Beta signup site.
Get Tutorial at
http://www.youtube.com/watch?v=vKSSOl4f9RA