dissects the visual cleverness of craigslist (and how it is a yahoo-sized business in the making)

Now Craig’s lead-into-gold trick is that he gets his posters to accurately classify their spam. Into 160 categories. Holy Toledo Jacob Nielsen. You can’t have a pulldown with 160 things in it. 50% of your users wouldn’t get a pulldown with 3 things in it right. Ah, but it’s not a pull-down. 50% of the entire homepage is a giant selector devoted to classifying posts.

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