Link blogging

Today I’m releasing SocialHistory.js, code which enables you to detect which social bookmarking sites your visitors use.

So what I did is I modified the SocialHistory JS so that it polled the browser to find out which of the Quantcast top 10k sites were visited. I then apply the ratio of male to female users for each site and with some basic math determine a guestimate of your gender. The math is really quite simple, I just take: 1 / (1 + r_1 * r_2 * … * r_n)