The site poses problems in lateral or logical thinking, from easy to hard, with both hints and answers. Great party conversation and something kids will like.
narrative+history+pictures+encyclopedia; "safe, fast and fun way to learn the real story behind historic events, famous people, heroic exploits, legends, disasters, movies, plus topics of current and general interest"
again, I am fascinated by lists of bests, especially as related to literature; they comprise both an ideology of the canon and a sociology of popular tastes, a la Bourdieu; in an extended form, they comprise much of amazon.com
"ShopWiki actively crawls more than 180,000 online stores to ensure you’ll find the products you want at the best prices." For a class looking at web2.0 apps, it's the kind of thing students would enjoy playing with.
considering a new kind of network or network-assisted art, such as Internet or cell phone facilitated performances, on or offline; using locative media; Creative Commons, etc. An older idea was Internet Art.