An API to build apps like Smartr, Flipboard and Lazyscope

Applications like Flipboard, Lazyscope, and Smartr.mobi are all built using backend technology that prefetches web content, and cleans it up for better readability. http://cln.me is an API for developers who want to build similar amazing applications but are stuck figuring out the backend. I saw that HN has an embedly version, it's almost trivial to build a similar site using cln.me What would you use such an api for?