It would be really great to offer Basecamp integration. I work for several clients who use Basecamp as their project management tool. Although I like Basecamp, it's overkill for me to use it so I use Checkvist (and because of the awesome keyboard shortcuts).

The problem is; I still have to log in to each respective Basecamp to see my todo items there. I would like to have automatic synchronization with these Basecamps so I can see my Basecamp todo items in my Checkvist lists.

Basecamp has an API available (http://developer.37signals.com/basecamp/time-tracking.shtml) so it shouldn't be too hard. If you have an API available, please let me know, so I can build the sync tool myself.

"Show an empty text field after adding a task"
Actually both settings under this option are useful and I find myself repeatedly want to change back to previous setting after setting this on or off because of a new condition I'm working on.
When we are adding some tasks here and there we need that to be off and not be in the way.
But when we are in a list and adding some items one after another it's lovely to have this setting on but a chore to go the menu again!
So having a shortcut to toggle this on/off may add another great keyboard shortcut to Checkvist.
maybe "sf" for Show Field or "se" for Show empty and being easy to remember.

thank you again for creating the most user friendly organizig tool on the internet.

not sure if this is too much work but would be handy if i could have the ability to have a list attached to another list from a different section

heres an example

original actual list

* shopping
** food
**** bread
**** milk
**** butter
** tech gadgets
*** ipod
*** netbook
*** mp3 player

now in a different list entirely

* wish list
** (pointer to tech gadgets list)

when i then view my wish list or my shopping list I should see the same tech gadgets sub list and any change i make in either list to this tech gadgets list will be shown in both as the tech gadgets list is effectively shared across both lists