First, Michael Robertson took on the music industry with MP3.com; then he went after Windows with Linspire; then he went after the telephone industry with Gizmo; now he wants to do a Don Quixote on Microsoft Word with ajaxWrite. ajaxWrite does appear to be revolutionary: it's a Web-based word processing service accessed through a browser, which Robertson claims meets the needs of "90% of people in the world". What's intriguing is it's free, which prompted Om Malik question whether there is a business model. Then again, Robertson's much more of an ideas guy than a business guy. He seems to get his entrepreneurial buzz by thumbing his nose at the powers that be even it gets him in trouble and doesn't lead to a financial bonanza. Maybe ajaxWrite will be enthusiastically embraced but what's the end game here: its purchase by Google, Microsoft, Yahoo? That way I see it, the Web-based word processing prize has already been snapped up with the acquisition of Writely by Google. Having used Writely extensively over the past couple of months to organize the mesh conference, Writely resonates because it has that little something different - the ability to collaborate with other people on documents online. I give Robertson credit for doing something to shake things up but this may be more of a good idea than a good business.