Doug Johnson cites Miguel Guhlin, who asks, "Should school districts continue to allow teachers to post content online in Web 2.0 services that are 'free' now but may result in cost later?" Johnson adds, "Something in me shares Miguel's concern about the over-use of free resources on the web. Is this an economic model that is sustainable and what will be lost if a free tool goes away? (Especially as we think about moving into Google Apps for Education.)" But, of course, this is not a problem with using free resources online. It's a problem with using commercial services online, and in particular, those offering an 'introductory low low price'. As for the adage, "There Ain't No Such Thing As A Free Lunch," that's a piece of propaganda that is proven wrong by charities and generous individuals in every city on every day.
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