That's why I left Comcast when we moved out of Burlington. Not that they were blocking inbound traffic, but that the Terms of Service said that I wouldn't have inbound traffic. I didn't do that in Burlington, because the TOS had allowed it when I originally signed up (for the late-lamented MediaOne), but I wasn't going to sign a new contract agreeing from the start not to do something I was planning to do. So I went with Speakeasy, for less bandwidth at a few extra bucks.