incrediBILL - 6:34 pm on Mar 19, 2012 (gmt 0)
Open port 80 doesn't equal proxy.
While that may be true, close inbound port 80 and problem solved.
Why you have an open port 80 in the first place?
I've already lost trust in your site. I'll spend my time and money elsewhere.
To webmasters being abused into oblivion, losing a couple of port 80 proxy customers won't matter that much as it doesn't happen often.
Might as well set your email server to allow relay while you're at it and see how many emails you ever send again.
There are some rules about how to configure ports and services that are simply becoming too hard to ignore.