You can't. But like I said: of course it's not 100% foolproof. Going from that to "they think links and text are different things" is quite a leap.
After a while the second, third and fourth won't be required.
Jeeze...we learned obfuscation fucking years ago (torrenting was punishable then, probably is still, and a few people may be made examples of, by ip tracking etc as subscribing becomes more disliked).