Hi. I've been studying some sites and I see that there are nofollow links on their internal pages. Why do they do this? When should I put the nofollow tags on internal pages of my blog? Thanks.
The only reason it would make any amount of sense would be in thinking that it will prevent indexing of certain pages. However, it normally would not prevent indexing. There are other, better ways to control crawling of a site (*see blog entry in upper left). It does make sense to nofollow some, or even all, external links since the linkjuice would then be passed along to the main url or passing proportionally more linkjuice to specific external links. <edit> Wow! That's a great bit of info! Thanks