Very nice idea. Although scraping should always be a last resort, I could imagine using this for semi-serious purposes, i.e. when I care enough about the output, will be doing many requests, don't mind relaying data via a third-party, etc.<p>I currently do quite a bit of scraping for my own use (generating RSS feeds for sites, making simple commandline interfaces to automate common tasks, etc.). I've found xidel to be pretty good for this: it starts off pretty simple (e.g. with CSS selectors or XPath), but gets pretty gnarly for semi-complicated things. For example, it allows templating the output, using a language I struggle to grasp. This service seems to address that middle ground, e.g. restricting its output to JSON, and hence making the specification of the output much simpler (a nice JSON structure, rather than messing around with splicing text together).