Date: 01/01/70 (Webmaster View)    Keywords: software, web, spam, yahoo, google

Google, MSN and Yahoo! announced their support for rel="nofollow" attribute to hyperlinks. They will ignore links with this attribute to prevent comment spam. Movable Type and other blog software makers and service providers also announed their support. Movable Type released a plugin to modify all links in comments and trackbacks to include the rel="nofollow" attribute.

Links:

• Google: Preventing comment spam
• Yahoo! Search: A Defense Against Comment Spam
• msn search: Working Together Against Blog Spam
• six apart: Support for nofollow

figby.com says: "Dishonest webmasters will use this attribute ... on all external links, to prevent precious PageRank from leaking out of their sites." and,

we'll also see people who sell links based on their PageRank and then add the nofollow attribute later, making the purchased links worthless-but as far as I'm concerned, anything that hinders the widespread practice of selling links for ranking can't be a bad thing.

Comments

Source: http://www.webmasterview.com/search_engines/nofollow