Information Week has obtained leaked internal Microsoft memos which details the concerns the company has about its competition including Apple, Skype, Adobe and of course Google. Here's a portion of Ray Ozzie's memo to the troops:

"Google is obviously the most visible here, although given the hype level it is difficult to ascertain which of their myriad initiatives are simply adjuncts intended to drive scale for their advertising business, or which might ultimately grow to substantively challenge our offerings," he continued. "We knew search would be important, but through Google's focus they've gained a tremendously strong position."

This news article was written on November 11, 2005, quoting InformationWeek.