Free service to extract article from webpage

In a previous post I showed a tool for automatically extracting article summaries. Recently I came across a free online service from instapaper.com that does an even better job.

Here is my blog article: http://blog.sitescraper.net/2010/06/how-to-stop-scraper.html

And here are the results when submitted to instapaper:

And here is a BBC article:

And again the results from instapaper:

Instapaper has not made this service public, so hopefully they add it to their official API in future.