Yes.
http://www.techcrunch.com/wp-content/smincomebig.png
My app (http://apps.facebook.com/themafia) is currently doing around 9K a month a revenue, and it's not even that successful by Facebook app standards.
http://www.techcrunch.com/wp-content/smincomebig.png
My app (http://apps.facebook.com/themafia) is currently doing around 9K a month a revenue, and it's not even that successful by Facebook app standards.
My only expense is my time and hosting costs.