I agree completely that further filtering would improve the site a lot. That kind of filtering would require a lot more than a basic port scanner. I'll probably

I agree completely that further filtering would improve the site a lot. That kind of filtering would require a lot more than a basic port scanner. I'll probably do it someday. It's also really fun to find web servers on nonstandard ports, but I worry about the site then being abused to find compromised servers.