1. 480x60 Banner This space is not available for advertising on the main page. It is reserved for the top 25 sites on the list and rotates randomly every hour. This space is available on all other pages.    •$30 per month (shown on all pages, all the time)    •$15 per month (shown on all pages, every 3rd time)    •Three month minimum, paid in advance    •Not available on main page 2. 100x120 Button The side navigation buttons offer the best placement and highest visibility.    •$40 per month (shown on all pages, all the time)    •$20 per month (shown on all pages, every 3rd time)    •Three month minimum, paid in advance 3. 480x60 Banner Allows for a larger ad, however the placement is less visible at the bottom of the page.    •$35 per month (shown on all pages, all the time)    •$17 per month (shown on all pages, every 3rd time)    •Three month minimum, paid in advance