In addition, telecom - industry bankruptcies cost Logical Net tons of revenues from «reciprocal compensation» — fees it collected when telecom businesses used the company's phone or Internet lines. (inc.com)
With some websites (e.g., Match, eHarmony), people pay directly for subscriptions, but even with the free websites (e.g., Plenty of Fish), there are tons of revenue - generating advertisements (similar to the Facebook business model). (scienceofrelationships.com)
Traffic signage might be a huge industry that e Ink can garner a ton of revenue from. (goodereader.com)