Mindful Browsing - Control habit forming, distracting or aggravating websites. →

With Mindful Browsing, you can block the websites that cause you these problems. Once blocked, if you try to visit one of these sites by following a link, clicking a bookmark, or typing the address, Mindful Browsing will show you a warning page reminding you that you blocked the site, and encouraging you to decide whether or not you really want to visit the site.

Basically, allows you to add an “Are you sure?” prompt to any URL you desire. It is, perhaps, a good half-measure to using some other app or hack to block certain sites entirely.