Rick Astley's "Never Gonna Give You Up", released in 1987, became a smash hit of the time. Thought it was a big hit at the time, sometime around 2007, it hit the internet like a storm. People (some called "Trolls"), started misdirecting others to this video. This act was called "RickRolling". At first they would bait them with an exciting title or description and then link them to the song. The URL could be masked by websites so the receiver would have no idea of the impending joke. Many fell victim to once terrible song, the main "rickroll'd" video has over 58million views on YouTube. It remains to be a staple in the meme community.
-On a personal note, in 2008 I got RickRoll'd so many times that it stopped being annoying and I started enjoying the song.