oldgaga

do you think that you can hide links by robots.txt ??? are you serious?
Seems i was not clear enough. He adds an INTERNAL links instead of an EXTERNAL link. In this way he masks his links. Please read this clear example.

E.G.: BrasilTudoLiberado. This site has not reason to be approached as an affiliate, but theporndude.com hides this link to Googlebot using the cloaking AFFILIATE link functionality because it is in SPANISH (for Google it is not good if you have link to pages in other languages..).

"If you’re hiding the true nature of your links so you can send bots to one destination and human users to another, Google considers you cloaking for a malicious reason and will penalize you for doing so. This is also a bad technique, and while it’s harder to catch, it’s still obvious to some bots and will hurt you in the long run.

"

Source: How to Properly Cloak Your Affiliate Links

do you thkink that google no follow these links because of robots???
As explained in the previous answer this is not the point of the discussion.


google knows what he doing, and this is not blackhat seo
if any link is disabled by robots or nofollow tag thats mean that these links are less important, but google index it too, these links get benefits too
Yes Google knows what he is doing in fact he has just been penalized passing from 4M to 300K. And theporndude.com is violating the Google Guide Lines rendering to Googlebot a version of his site and a different one to his visitors.
The link are MASKED not disabled (I don't thinks that to "disable" a link is possible ).