Keystroke Marketing is a Pennsylvania based Internet marketing firm and online advertising agency with proven leadership in search engine optimization, pay per click advertising, web site promotion, SEO copywriting, and Web site analytics. From our headquarters in Harrisburg, PA we serve Internet marketing clients worldwide with a specific focus on cities in Central PA, Pennsylvania, Maryland, and Washington DC. Don’t settle for an average, underperforming Web site promotion. Let our team of Internet marketing specialists show you increased visitors, solid leads, and a real return on your investment through search engine optimization!