Both of these services change the actions of regular hot links into uber-links of sorts. Though they might seem similar on the surface, it seems that while Snap Shots purpose is to make links more helpful and useful while keeping the reader on your site, SmartLinks (I can't stop thinking ShitLinks) seem to have the purpose of driving traffic from the page containing the links to any of numerous other sites that they no doubt have financial agreements with. AdaptiveBlue's SmartLinks act like launch pads away from your site while Snap.com's Snap Shots are like tethers allowing users to get just the info you want but keeping them on your site in the process.  Read more ...