I'm late to the party and frankly I have no interest in reading this thread. But I did give someone a temp ban earlier as the vulgarities and harassment contained in their post overshadowed any potential value.
There are things I can check, for example I can see which members you share IP addresses with, if any, in addition to the type of IP address you're using. For example if you have an ATT U-Verse IP and an ATT wireless IP from the same city then its pretty clear you are on the site from your mobile and home internet connections. I can also see if your IP is likely to be residential or datacenter where most VPNs will come from. So while I can tell a little bit from a glance I did not see anything egregious in terms of the same user coming from a VPN or TOR like IP address although I only checked a few. TOR exit nodes are generally blocked or blockable, it is a matter of enabling that during the registration process. If someone does become suspicious, I can force them to accept a browser fingerprint test(It works like https://amiunique.org/fp).