User-generated quiz4fun.com lets quiz freaks show off their brain power.

Photo by Magnus Skoglöf
Are you an expert in World War II? Do you know all about Britney Spears? Or is Australian wildlife your special area? Trivia buffs of all kinds get to flex their geeky biceps on Vetgirig.nu, Sweden's biggest quiz site.
Vetgirig.nu began in 2004, with a mission to help people learn in a playful way. The fledgling site caught the attention of Magnus Palm, head of Bonnier's crossword magazines, and in 2007, Bonnier acquired the site.