This looks neat. I like that you include a link to a videocast demo because I didn't really get it from the description.

I think the demo could be improved by shortening it to under a minute. I think you could also include the target website on the screen so we get an idea of what is being extracted.

I notice you're using `@` symbols as delimiters. It seems people who scrape websites would commonly want to scrape email addresses. Does the current delimiter choice allow that?

Your website design is nice. Nothing gets in the way and the text is minimal and to the point.