The act of aimlessly clicking through links in an online wiki, such as Wikipedia, often driven by boredom and wanton curiosity. This is facilitated by the fact that most wiki's are crosslinked everywhere, so you may very well look up "Potato" and eventually wind up in "Vaginal Suppository".
I got sucked into a three hour wikidive last night, starting at "Animal farm" and winding up at "Crush Fetish."
Wikidrift is the process in which you proceed through different topics only by using the links available on that certain page.
It usually occurs when the other topic is of more interest to yourself than the one you are currently viewing, having a higher occurance when one is studying.
Guy: "I was looking for information on sausages, only to find out about brain tumors"