We're using this library to find original image links from URLs in tweets.
Track down the source image file from social media links.
SourceImage.parse 'http://yfrog.com/nwxq48p'
=> {:media=>["http://img860.imageshack.us/img860/1516/xq48.png"], :processor=>"yfrog", :url=>"http://yfrog.com/nwxq48p"}
SourceImage.parse 'http://www.sheltonplace.com/nothing'
=> false