Are you the victim of frequent Rickrolls? The time-honored, and now passe trend of being tricked into thinking you were seeing one video and ending up seeing a rendition of Rick Astley's "Never Gonna Give You Up" instead?
Well then we have some good news for you: there's a new Firefox add-on called RickRemoval that solves this problem entirely. Install it, and it will do a quick check on the page, as it's loading, to spot Astley's video and keep it from playing. It's also nice enough to put up a little message alerting you to the fact, and offering to load it anyway.
The add-on works off blacklists of well-known Rickroll video pages and video links, along with scouring any site that's not on that list to look for words or phrases that look suspicious.
Now, its only a matter of time before someone combines this with the Justin Bieber Internet eraser.