MYSQL backend database system allows you to rotate HTML. Similar to a banner rotator in concept but allows rotation of complete HTML (including images, javascript, any HTML tags). HTML can be rotated as an exit system, rotate your start page or you can rotate a frame in a page or just a paragraph or WORD inside any HTML page. It gets better though! This rotator also allows you to categorize your system with unlimited categories of rotations. In other words you can setup a category example such as "marketing" or "webhosting" and only rotate HTML ads appropriate for that target audience. You can sell your ad space however you like (exit pages, frames, whatever) and each client is provided a login to check their stats. If you have a client with multiple ads the convenient interface lets them see all their stats with ONE single user/pass so they don't have to be bothered remembering 500 different passwords - although that is optional too. You can also setup to expire one of two ways. Accounts can be set to expire by number of impressions (when the account holder exceeds the set number of impressions their ad automatically expires). Accounts can also be set to expire by number of days (flat rate advertising). This offers you a dual marketing approach to selling your valuable banner space. We use this very same system to sell ads on our site and it works great. System load is virtually undetectable. All stats are in real-time. Admin panel allows you to browse all accounts and their individual statistics, view all ads at once, modify/delete accounts, and even check the overall stats to your server. Single installation can run ads on unlimited sites.