Using rel=”nofollow” is helpful when you want to control the value of “link juice” you want to pass to other link so this way you decide which link is more important. Links without it get more link juice and you can pass your page rank to that page. As I remember it was long time ago. But this is not important and it doesn’t work anymore, as Danny Sullivan explained in his announcement:
Imagine authority is money, and a particular page has $10 in “authority” to spend. It links out to 10 pages, so each of those pages gets $1 ($10 divided by 10). If it links to 20 pages, each gets 50 cents ($10 divided by 20). If it links to 5 pages, each page gets $2 (you get the math by now).
Now everything is different and the best way is to choose whether or not to pass your link juice. If you really think that page or a link is not so important so the best way is not to link at all. There is another explanation by Danny Sullivan:
Again — and being really simplistic here — if you have $10 in authority to spend on those ten links, and you block 5 of them, the other 5 aren’t going to get $2 each. They’re still getting $1. It’s just that the other $5 you thought you were saving is now going to waste.
I hope you get the idea and links that you think is getting more link juice actually isn’t. This is a new thing introduced by Google. Google has made even more changes but i think this one is the most important for webmasters. So don’t waste your Page Rank.
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Jun 5, 2009 at 09:57:14
ya..google will take action but i never scare of…u just need to know mainatin ur inbound link, sure no prob
Jul 23, 2010 at 11:34:12
good post