Registering accounts itself dirties the IP and you can only get away with creating something like 6-10 accounts from a completely clean IP (a hospital for example 
) before more accounts start getting charged the evil fees..
Even without doing anything “bad”, or even doing anything at all.. Creating accounts builds evil..
Thanks for explanation about this, I had no idea that after you make several accounts you will get start getting charged. I suspected there is some cap after which you will get flagged and that you can't make new accounts indefinitely but based on so many sock puppet accounts made by farmers, I though that number is much higher than 6-10. ) before more accounts start getting charged the evil fees..Even without doing anything “bad”, or even doing anything at all.. Creating accounts builds evil..
This may stop some low level abusers like bounty hunters that just want to create few more alts, but unfortunately that's no issue for pro account farmers. Better that than nothing I guess, but how can someone that never visited bitcointalk before nor used Tor/VPN when registering get this "evil fee" message? Does that mean that for example someone in his building or close to him made bunch of accounts so he got affected by that too? Then again, what are the chances of that happening...