Portland Web Design

Definitions of Authority site on the Web:

• a measure of the quality (in the all-powerful opinion of the search engine company) of a given site, gauged by some combination of size … from www.abelgraphic.co.uk/glossary.php
• A site that is deemed by a search engine to be authoratative in it’s chosen field of subject matter. … from www.denialdesign.co.uk/glossary.asp
• Jon Kleinberg, an Associate Professor of Computer Science at Cornell University, wrote a paper that described a means of identifying websites that … from www.corporatewebsitemarketing.com/search-engine-marketing-glossary.html  
• Authority site is a term the Search Engine Optimization (SEO) community coined to refer to a website that dominates search results for a specific … from en.wikipedia.org/wiki/Authority Site

Why try and link from them to your site? The plain and simple reason is their link juice to your site will benefit help your ranking and drive traffic to your site!

Read this good article: How To Boost Your Search Engine Rankings
By Getting Links From “Authority Sites” 

Here is a list of Authority sites that are important to utilize.

• Squiddo
• Wetpaint
• Wordpress.org
• Google Docs
• Ezine Articles
• Facebook Pages (not profiles)
• Quizzilla Journal Pages
• pbwiki
• Slideshare
• Zimbo
• Swicki
• Faves
• Clearblogs
• Propeller
• Kaboodle

GOOD LUCK — Work smarter not harder for your traffic!