This document discusses search engine optimization (SEO) and search engine marketing (SEM). SEO involves optimizing a website to increase its organic ranking in search engines, while SEM involves paying for placement in search engine results. Key SEO techniques include choosing keyword-rich domain names and titles, obtaining relevant inbound links, using keywords throughout content, and submitting the site to search engines. Paid search options include paid inclusion programs that guarantee indexing for a fee and paid placement programs that auction keyword rankings. Both SEO and SEM are important internet marketing strategies.