"http://www.businessweek.com/technology/content/oct2007/tc2007101_499889.htm?chan=top+news_top+news+index_ technology"

"On average, he estimates, Skype's users pay just 12¢ to 13¢ per month.
Despite its legal troubles, Vonage (VG) generates $28.38 a month from
subscribers to its Internet-based phone service."