nofollow

Introduction

nofollow is a value to the rel attribute of an HTML a element to instruct search engines that a hyperlink should not influence the link target's ranking in the search engine's index.

Example

<a href="http://www.example.com/" rel="nofollow">Example page</a>

When to use NoFollow

• When linking to Feedburner RSS feed
• When linking to questionable sites
• When linking to internal pages that don't need PageRank
• Paid links and ads
• Comment links