If you are trying to get links from other sites, then you want do follow links. A "no follow" link has in the html coding the words "no follow" which is basically a "dead end" sign for google and other search engines (definitely not all). If you have a normal link (referred to as do follow, since the search engines follow it) then it counts as a link back to your site which aides google and other search engines in determining if your site has authority. The more links back, the more authority you have.
So what does "index,follow" mean then? Edit: This site answered my question..... http://www.i18nguy.com/markup/metatags.html
dofollow - PR will pass. nofollow - PR wont pass. index,follow - Its not mandatory, its just instructing robots to index the page and follow links they find.
Yes, do follow is the best, but no follow links can provide exposure to your site, if not actual page rank benefits.
Searching "nofollow" and "dofollow" in google is a lot faster than asking these things in a forum where you have to wait for members to answer it for you..
No follow and do follow, both are important. Keep in mind that, commenting on blog and forum also attract direct traffic.
nofollow links occur naturally in the wild. I like to use a certain percentage of nofollow links just to round out my link profile. dofollow are the ones that count. index,follow commands are worthless. The standard these evolved from is called the "Robots Exclusion Standard", which was used to ask spiders not to visit pages. Spiders are naturally 'hungry' creatures and will crawl as many URLs as they can. They naturally assume index,follow without the tags on your page.
Guys, I'm pretty sure this has been covered extensively enough by the 30 million other replies and similar threads.
>> Dofollow Link is a hyperlink that is able to tell all the search engines to pass along it’s page rank influence to an outbound link. Nofollow is simply opposite of Dofollow. >> Nofollow Link is exactly the opposite. It is a hyperlink that removes the ability to pass on it’s page rank status to other sites.