You have to hand it to the team at 37Signals. They keep one of my favourite blogs, and in reviewing their best posts of last year they did not make one list, they made six and released them one after another…the 42 best posts of 2006.
Though they have not come out and said it, I’m sure they released six lists because they did not want to have more than seven links listed in one post. Seven is the “magic number”…the human brain does not do well when it has to retain or digest more than seven options/choices. Ever notice how our website only has seven main navigation links? No fluke there.