I'm working on an API that provides information any webpage you specify: useful if your users are trying to share the link, or to check if your site shares well socially. Also good for research or page indexing.
http://radar.runway7.net/?url=http://blog.phusion.nl/2013/01/03/rails-sql-injection-vulnerability-hold-your-horses-here-are-the-facts/
http://radar.runway7.net/?url=http://tech.fortune.cnn.com/2013/01/03/google-larry-page/?section=money_technology&utm_source=feedburner&utm_medium=feed&utm_campaign=Feed%3A+rss%2Fmoney_technology+%28Technology%29
http://radar.runway7.net/?url=http://www.wired.com/gadgetlab/2013/01/leap-motion-asus/
I'm planning to provide API keys and monetize the service. Any feedback?