I currently use Quicksilver with a Plugin and Trigger in concert with Snow Leopard's text replacement feature (for frequently-used combinations of hashtags, due dates and other parameters) to quickly send tasks to Remember The Milk (http://www.rememberthemilk.com).
Unfortunately, I have to click "Text Replacement" from the right-click menu of the text entry field in order to use that feature. I'm suspecting that I can add some AppleScript to the Trigger as a work-around to do that automatically. If so, what would be the best way to go about this? Would I need to use GUI scripting?