If you want to see a beautiful exponential curve, graph the commonality of last names. Some names (::cough:: Smith) are EXCEPTIONALLY common. Jonathan Moore realized this and he used it to extract more data from Friendster. “From this we see that after trying only twenty-eight last names we have a ten percent chanse of having guessed the user’s last name.”
Moore continues on to tell us other ways of extracting purportedly private data from Friendster. Ah, hackers, how i love thee.