In this article, the writer argues that WotC's new virtual gaming table and suite of online services called D&D Insider should be following an hourly, rather than monthly, model for online play. He notes that RPG gamers tend to play once a week, four 4-5 hours at a time. At that rate, they can't easily justify spending $75+ dollars a month (as a group) to pay for an online service.

I tend to agree with him, but I don't think Hasbro's accountants can grok his logic.