Effect of Advertising on Open-Source Software Revenue

• Less likely to click: it makes me sick to hear about 40 cents per month and I'm never clicking your ad.

• No difference, but I refuse to click all ads--so good luck saving up $1 million in 2.5 million months!

• Neutral, I'm not really sick of the ads, but I just don't have anything I want to buy from Amazon.com

• Positive difference: I plan to click on the ad before purchasing my next item from Amazon.com in order to give you a nice surprise next month!