How to convert forum subject links to be "nofollow" to google search engine?

    I wonder-

    If i want to mark certain subject links that display on the forum to be "nofollow" to google search engine-


    I have threads that i dont want google search engine to read.


    What should i do to achive that?

    If you don't want Google to index threads on a certain forum. Then you can make that forum and everything posted on it hidden from guests (bots) using the usergroup permission system.