fiannaFailMan writes "Bill Gates has sent out another memo heralding the latest big development in the industry, as he sees it. This time it's web-based software using technology such as AJAX (that MS 'invented but failed to exploit'). The Economist says 'As in previous cases, what is new is not the idea itself, but the fact that Microsoft is taking it seriously.' Zach Nelson of NetSuite decided against writing a memo. 'Writing memos is cheap,' he says, whereas 'writing software is a whole lot harder.'"