Update: by Facebook standards Read/Write Web says POF is worth a cool one billion dollars. But that's not the most interesting part of the story. How are all these love connections made using so few resources? and u know where everyone hopes it leads to in their own different ways.
All this is handled by one person, using a handful of servers, working a few hours a day, while making $6 million a year from Google ads. The same why everyone gawks at Paris Hilton and her doings ..
It probably enjoys the benefit of kernel-space IO which is much faster than user-space. Maybe you can use different table types, caching policies, and other read optimizations as well. NAT only supports 64,000 connections per Source IP address.
It's hard to believe that no caching is being used at all; but it's not impossible. Its nothing to do with IIS its TCP/IP related. SI supports a maximum of 64,000 simultaneous connections on each source IP address.
host your own server or use ISP co-location option? Would you rather date a creepy guy off there or download some good old porn. This was probably a key point in increasing his SEO.