This article appeared as an op-ed in the Sunday, Dec. 13, edition of Newsday.Will news nonprofits bankrolled by foundations and philanthropists be pillars of the future media ecology? To judge by the fast decline of mainstream media’s business model, and the fast rise in philanthropy-funded journalism, it’s starting to look that way.This has been an extraordinary year for the creation of new-media organizations and Web sites, and a big reason is the money that foundations and wealthy individuals are investing. Thousands of community news sites have been launched, and most of the prominent ones are nonprofits. Just in the last……