Hello, I'm trying to work out the code for my pay-per-click system. I know the pseudo below is full of kinks. Can you have a look and help out, or have any suggestions on how to develop one of these... Maybe a tutorial in php or pseudo. When searching all I find is how to run campaigns on Google, lol. Pay-per click system - workflow 1. Pull out all ad campaigns ordered from most clicks to least clicks wanted. 2. Depending on clicks wanted generate a number from 1-100: to determine click range. If at least 1 ad clicksWanted >= 100 and one clicksWanted < 100 and >= 50 and one clicksWanted < 50 - 60% chance if >= 100 clicks, 30% if < 100 and >= 50, 10% if < 50. Else if one clicksWanted < 100 and >50 and one clicksWanted < 50 - 60% if above 50, 40% if below 50 Else if one clicksWanted >= 100 and one clicksWanted >= 50 -60% above 100 and 40% if >= 50 Else if one clicksWanted >=100 and on clicksWanted <50 -80% if above 100, 20% if below 50. If only one ad in either range then - show ad in that range End if 3. Explode ad's tags for each ad within that range: CSV. 4. Find random ad within that click that matches a find in users tag usage. 5. Show that ad to the user. 6. If user has never posted with tags show any ad from selected range.