Actually, the ads often help to keep the price of freemium not as high as was mentioned in the article. Also the Micro-Payments are good for sellers because th

Actually, the ads often help to keep the price of freemium not as high as was mentioned in the article. Also the Micro-Payments are good for sellers because the customer have less control over what he is consuming, because it's a pain in the %$# check every time how is your consume. So having less control over your consume the pop up comes faster :D