difference between do follow and no follow?

[fayeseom]

Dofollow Link : Dofollow Link is a hyperlink that is able to tell all search engines to pass along it’s page rank influence to an outbound link.Example,
Dofollow Link= < a href=”http://inproblog.com”>
Nofollow Link : 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.Example,
Nofollow Link= <a rel=”nofollow” href=”http://xyz.com”>