I always keep a tab in Firefox opening Twitter and I prefer the mobile version instead of the standard one for speed and simplicity.
Despite the simplicity, one thing I would like to have is automatically load next page when the mouse scroll to bottom (just like what Google Reader does). As a result I come up with the Better Mobile Twitter user script.
You can install in
http://userscripts.org/scripts/show/35396.
Below is showing how it works, or you can
watch in high quality.