notes on "how to clone delicious in 48 hours" This made me laugh with recognition. After all, delicious doesn't go anything complex, does it? It's got all of three different blobs of data – users, who have links, which have tags. (And some optional text, but that's trivial). How had can that be to throw together? And one one level, that's true. I could roll my own personal delicious in a weekend. But I couldn't make it available to anyone else without months of work.