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Well, they really exist. Of course it is not a usual thing. I know that they should be nofollow's, but they are no follow's. The question is if Google ignores wrong versions or not. What do you think about the mistyped version? Is Google smart enough to ignore them, or smart enough to translate them?

Thanks, Iain! Our case seems a bit more complicated (or more simple). Page loading time is very long due to the large amount of posts, so we must reduce the amount of comments.

Hi Imre, by all means if you'd like to send me more detais via pm so I can see what you are talking about exactly, then feel free to do so. Although I feel that my earlier advice will still be true. The anchor (sitelink title) is automatically generated by an algorithm and not manually edited (as yet). I have seen some pretty random sitelink titles for other sites. I have even seen sitelinks where the title has been taken from some random piece of code on the site. Unfortunately, without knowing the exact details of the algorithm, there is very little you can do to influence the anchors other than what Google outlines in their guidelines (which is very little). Like I said previously, if the title is that problematic and you want it gone, then your only option is to demote the whole sitelink.