As a link building tactic, broken link building is an effective, white-hat, scalable, content-focused link building strategy that builds links through finding broken links, recreating that broken content, and helping webmasters replace broken links with your corrected link.
Broken link building may perhaps be the most effective, white-hat link building strategy in years. In particular, broken link building is appealing because the success of the campaign is directly proportional to how much good you do for the web.