When do you use nofollow mostly?
 

When is it a good idea to use "nofollow" and is it necessary? Does it ever help vs hurt?

I'm hesitant to use it all unless I must to solve a duplicate content issue. I may be paranoid but to me it screams "I'm doing SEO".

hardly ever...

I didn't think of it that way...good point. I'm debating on testing the effects of using it with some stuff. Just not sure if good or bad to do yet.

I use it on all affiliate links, but not on link trades

don't bother. link sculpting is dead if it ever worked anyway.

links pulled

this is the smart way to do it :2 cents:

I use nofollow on my internal redirect scripts to stop the links being archived off, since it would cause some confusion if someone clicked a search result and it flew to a fhg on a different site. It also means I know what's going on (but alot of mine is scripted in so I don't write them in that often)

I agree that link trades need not to have it, but for everything else it works well.

bumping this one because I have been trying to figure out how to utilize nofollow for my sites lately and it seems like something that should be used on ads / affiliate links, yet some people still advocate not using it at all... so my question to that camp is why wouldn't you use nofollow on affiliate links?

google must die

Yes I do the same.

I don't use it anymore.. I think it's factor is tiny, if it has any at all anymore.

If you want to block something onsite, use a robots.txt file. If you want to block affiliate links or other external links, use the robots.txt file and 301 redirects.