Probably more than 500 lines. Doing information extraction on all those different sites probably involves quite a few scripts and doing search on the scale and

Probably more than 500 lines. Doing information extraction on all those different sites probably involves quite a few scripts and doing search on the scale and at the speed they're doing undoubtedly involves backend services too. When they launched, Spokeo had a really nice Flash client too for aggregating RSS news about the people you're following.