Can't say specifically 'how many', but I can say that the ads do come, and at times, at different degrees of values; there will be times Micros will overflow, and other times one will be able catch 1 or 2 Extend ads in a server cycle -- but no way to give a specific number since there's no limit how many ads one can click per server cycle ( that is, 24hrs ) -- so if you have a toolbar installed, keep your ears opened; refresh ( press F5 on your favorite browser )every 2-5 minutes if one doesn't have a toolbar