Someone who categorically disputes the accuracy of Wikipedia without knowledge of specific examples. This person believes that Wikipedia is not a 'real encyclopedia' because it doesn't follow a traditional writing / editing process.
Even though Mike was an expert in barebacking, he was just plaing the roll of wikicracker by disputing the Wiki entry, since he didn't even botherreading what was written.
A Shackteau is a humble, weather-beaten, structurally questionable shelter located in a spectacular or highly coveted place—Wales, Jackson Hole, Sun Valley, Crested Butte, coastal Maine, the Alps—where the building itself may be worth almost nothing, but the dirt, view, access, and mythology make it absurdly valuable.
In use:
Shackteâu - We thought it was an abandoned shed until the realtor called it a rare alpine Shackteâu with unobstructed views and listed it for $2million.