well, it takes about a minute or so, but the add new source screen doesn't pop up. it just thinks for a while and then it stops. i have to click on the ff a second time and then the screen pops up.
1) on the search bar, type in the complete URL, and one of the choices that auto-appears is the ability to add a source 2) on your home dashboard, there is a link called "+follow a new source", click that 3) go to 'diffbot.com/follow'