text: how do i forecast online ad sales for a new web site?   it is hard to forecast potential ad sales for a new website. your mileage varies - and your income will depend on various factors:  1. types of advertising model - will you go for cpm, cpc or cpa types of ads 2. if cpc and cpa, responsiveness of audience to the ads (users looking to book a travel to spain comes to your site about tourist destinations in spain then clicks on an ad about hotels in spain) 3. ad format - how many will you run on the pages and what types (banner, rectangle, popup, popunder, leaderboard, sky, invue, interstitial, etc.) 4. ad placement - how prominent are your ads 5. ad colors - sometimes ads blended into the content works wonders, but sometimes ads that contrast your site colors work best 6. will you sell your own advertising or will you use third party networks such as banner networks (burstmedia, etc) or google adsense in which case you only receive a percentage of the profit 7. traffic you will get, especially for cpm models