I just released my first application on the android market. It's called SMS Logger. Basically if you like to keep track of all of your old SMS messages this program will store them on the SD card and also let you export them to a text file. There are some other features it uses such as auto back up and being able to view all of the current stored messages like you would in the default messaging program.
I would also like to thank the developers of this website since I learned quite a bit of android programming through the tutorials and the other help available on the site.