The document provides 10 tips for effective online advertising design: 1) include a clear call to action, 2) maintain a consistent brand voice, 3) ensure continuity of message across different ad sizes, 4) keep messages short and simple, 5) always link ads to a dedicated landing page, 6) use colors consistent with the brand, 7) use images that support the message, 8) only use animation when warranted, 9) keep designs simple, and 10) change creative elements regularly. The document concludes by citing the source website.