They then ranked ISPs by how many attempted TCP connections were interrupted by reset packets. And guess who is at the top of the list.
If you said "Comcast," you guessed correctly. According to the Vuze people's initial results, the number of reset connections was 20 percent for that ISP's subscribers.
Well, they are a bit of a biased source– but this is certainly a limit on the internet – censorship in a form not quite as extreme as China's but certainly uncalled for. It is reasons like this that we need government regulation on the internet.