Getting caught up in a seemingly endless loop of internet content, typically started by a youtube video or wikipedia entry. The user continues to look up even slightly related content, spiraling from related topic to related topic, typically losing hours out of the day.

Can also be used as a verb "to internet spiral."

An observed phenomenon where one must increasingly turn to hardcore pornograpgy in order to achieve arousal as they become decentcitized to vanilla pornograpgy.

Coined by a feminist author named Naomi Wolf (an 8/10 MILF might I add)

We've all done it. You start looking at a short clip - maybe only a few seconds long - and end up clicking on related content after related content for hours and hours on end. It's all just far toooooooo interesting!

A state of continuous or coninthing depression that may or may never end

Nine Inch Nails CD released in 1994

This term describes a depressive state where the person experiencing the downward spiral is getting more and more depressed, perhaps due to causes unknown. It is called a downward spiral because there is no way to stop it, its just going to get worse and worse... until the person crashes, and maybe finds their way back to happiness.

Going to a article and finding interesting links, and following links to same site, for a long time, like you were in a trance.