Facebook could make big bucks with a subscription-based service in which users paid a few dollars to receive an ad-free social media experience, Twitter co-founder Biz Stone says. Plenty of people would be happy to pay $10 a month for an ad-free "Facebook Premium" service, Stone hypothesizes. "If 10% ... of Facebook signed up, that's $1B a month in revenue. Not too shabby," he wrote in a blog post.
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