Links are necessary for any web site's search engine optimization (SEO) campaign. If you own a web site or have ever done SEO, you have definitely experienced and understand how difficult it can be to add links to your web site. In many cases you may have to take the initiative and email site owners asking them to link to your web site. If you ever do this, please remember the following:
Do not offer to link the web site you are requesting a link from. It will surely hurt you rather than help you if you exchange links with other web sites, this includes sites that are related to yours (in terms of industry).