HERE are some important examples and advices for link building strategies.

Many sites offer directories or listings of relevant resources

• You can find hundreds of these on SEOmoz's Directory List or use the search engines themselves to find lists of pages that offer outbound links in this fashion (for example, try searching for allintitle: resources directory at Google and notice the millions of results).

Get your customers to link to you

• If you have partners you work with regularly or loyal customers that love your brand, you can use this to your advantage by sending out partnership badges - graphic icons that link back to your site (like Microsoft often does with their partner certification program). Just as you'd get customers wearing your t-shirts or sporting your bumper stickers, links are the best way to accomplish the same feat on the web. Check out this post on link requests in order confirmation emails for more.

Build a company blog and make it a valuable, informative and entertaining resource

• This content and link building strategy is so popular and valuable that it's one of the few recommended personally by the engineers at Google (source: USA Today & Stone Temple). Blogs have the unique ability to contribute fresh material on a consistent basis, participate in conversations across the web, and earn listings and links from other blogs, including blogrolls and blog directories.

Create content that inspires viral sharing and natural linking

• In the SEO world, we often call this "linkbait." Good examples might include this Peak Season Ingredient Map from Epicurious, this Interactive Graphic Explaining Hand Signals Used on Stock Market Trading Floors from the New York Times, or this Video of an iPod in a Blenderfrom Blendtec. Each leverages aspects of usefulness, information dissemination, or humor to create a viral effect - users who see it once want to share it with friends, and bloggers/tech-savvy webmasters who see it will often do so through links. This high quality, editorially earned votes are invaluable to building trust, authority, and rankings potential.

Build content that can be shared through a citation-based licensing agreement

• If you have photos, videos, graphics, charts, raw data, or text content that can be licensed out with a system like Creative Commons' Attribution (or Attribution-ShareAlike), you can leverage the power of the web's penchant for information sharing while receiving links back to your originals and your site each time someone uses your material.