If you don't know what you are doing with nofollow, noindex and robots.txt you can royally mess* things up (face to face I would use a stronger term). Even if you do know what you are doing, you can still mess things up.
I can understand why Matt Cutts might want to change what noindex does, it is not just Koreans making occasional mistake, for instance I just noticed the whole WebProNews video blog is currently noindex nofollow. I am sure that is a mistake, it is easy to make in Wordpress… just one click and save.
All in one
Site Structure – SEOs Going Fishing Without Any Bait
If you don't know what you are doing with nofollow, noindex and robots.txt you can royally mess* things up (face to face I would use a stronger term). Even if you do know what you are doing, you can still mess things up.
I can understand why Matt Cutts might want to change what noindex does, it is not just Koreans making occasional mistake, for instance I just noticed the whole WebProNews video blog is currently noindex nofollow. I am sure that is a mistake, it is easy to make in Wordpress… just one click and save.
All in one