1. Purchase the branding rights to a viral E-book. Allow people to give away your free E-book to their visitors. Then, their visitors will also give it away. This will just continue to spread your ad all over the Internet.

2. If you have the ability to set up a forum or other bulletin board, you really have a great tool. Allow people to use your online discussion board for their own website. Some people don't have one. Just include your banner ad at the top of the board.

3. Do you have a knack for web design? Create some templates, graphics, etc. and upload them to your site. Then, allow people to give away your free web design graphics, fonts, templates, etc. Just include your ad on them or require people to link directly to your web site. Make sure that you include a link back to your site in the copyright notice and require them to keep your copyright notice in tact.