It wasn't working for me yesterday as well, but it looks like all is well again.

However, one thing that I've gotten used to with sites using textareas meant for copying and pasting is that when you click in the box it automatically selects all of the text for you, eliminating the need for any scrolling. For sites like yours whose success is based not only on its usefulness but also the small amount of time needed to get started, minor shortcuts like that can dramatically change the overall user experience if you can make your set up as painless as possible.