Was the Windows Phone 7 launch a success?

Microsoft has reportedly invested more than $100 million in marketing for its Windows Phone 7 launch. The phones went on sale in the United States through AT&T Mobility (NYSE:T) and T-Mobile USA Monday. Some reports indicated that the HTC HD7, sold through T-Mobile, was flying off store shelves. However, the financial blog The Street, citing an unnamed "market research source who tracks phone sales" said Microsoft sold just 40,000 Windows Phone devices Monday. How can the platform's success be judged? The short answer is that it is likely too early to tell, especially when Windows Phone is compared with sales figures from established smartphones brands like Apple's (NASDAQ:AAPL) iPhone and Google's Android. As PCWorld points out, a more apt comparison might be how long it takes for Microsoft to crack 1 million device sales, which it will likely want to crow about. Article