difference between do follow and no follow?

[siva s]

Dofollow links allow google to follow them and reach our website. Giving us link juice and a backlink. If a webmaster is linking back to you with this link both Search Engine and Humans will be able to follow you.
Example of Dofollow Link:

<a href=”http://www.google.com/”>Google</a>

Nofollow links attributes do not allow search engine bots to follow link.That means if the website owner is linking back to you with nofollow attributes, it does not pass on link juice. Only Humans will be able to follow the links.
Example of Nofollow Link:

<a href=”http://www.google.com/” rel=”nofollow”>Google</a>