Thanks for the feedback guys. It is supposed to make tweeting easier, but apparently it's not doing a very good job (although it probably does make you want to tweet nasty things about me :)
I find that many-a-web developers don't realize that people impulsively highlight sections as they read them. I usually triple-click to highlight a paragraph as I read it. It's just a habit, but it's apparently one I share with many people. This also frustrates me to no end on the NYT site, and it's the sole reason I'm not a subscriber.
I'll look into a better solution.