CMIIW, but doesn't the forum show message if your account cannot make post due to evil IP, proxy ban or similar reason?

Your IP address has previously been used for evil on this forum, or it is a known proxy/VPN/Tor exit node, so you are required to pay a small fee before you are able to post messages or send PMs. You can still use all of the read-only features without paying.

Your account contains (number) units of evil. To atone, you must pay a total of (number) bitcoins ((number) mBTC; (number) satoshi). Pay to the address [...]. Once you have paid the full amount, wait a few seconds and then reload this page. If the fee is so small that your wallet is unable to send it, you can send any larger amount, though you will not be refunded the difference.

Alternatively, any forum staff member and some other notable members can manually whitelist you. Paying the fee is probably easier/quicker, though.

If you don't have any bitcoins, you can get small amounts of free bitcoins using the sites listed here. It is recommended that you give the free bitcoin sites the address listed above. Do not collect money in your own wallet and then send the bitcoins to the forum — this will likely result in significant network fees.

If you find any bugs in this system, email pbbugs-...@.... For example, send email here if your payment is not registered an hour after sending it. You will be permanently banned if you send email here requesting free whitelisting.

I've reported 28 posts. If they get Nuked, I'll continue. If they only get removed (or even left alone), this is a waste of time. Spambots don't care about their effort being lost, I do.
Update: all 28 posts are deleted. I checked a few accounts, they're not banned.