On the article, if your mouse passes over a link (and you have JS enabled), it pops up a snapshot of what that page is, using http://www.snap.com/ http://www.sn

On the article, if your mouse passes over a link (and you have JS enabled), it pops up a snapshot of what that page is, using http://www.snap.com/ http://www.snap.com/. It appears to require you to have your mouse over the link for a little while (like a tenth of a second), so if you always move your mouse fast and never considered clicking a link, you wouldn't have seen it. It's really annoying.