This document outlines 10 easy ways to build backlinks, which are important for search engine optimization. Backlinks are links from other sites pointing to your site. The top 10 methods discussed are: 1) Submitting press releases, 2) Reciprocating links with similar sites, 3) Leaving comments on blogs, 4) Using social bookmarking sites, 5) Participating in forums, 6) Creating your own tools/widgets, 7) Submitting to web directories, 8) Submitting articles, 9) Blogging, and 10) Creating Squidoo lenses. In conclusion, backlinks are important for search engine ranking and websites should aim to get as many backlinks as possible through these easy methods.