I like it.

Sign-up nice and concept good.

Couple of comments/bugs: 1) When you first record something and click 'run' it brings up a confusing dialog box with a textbox. I figured out eventually this is a save dialog box, but it isn't obvious

2) Appreciate the need to queue things up, but I didn't find the queue status thing very intuitive.

3) I used news.bbc.co.uk as my test site, and all the IE ones died opening the front page.