You had to know those freebie WP7 devices for Microsoft employees would come with a few strings attached. We imagined the Redmond brain trust was aiming for some word-of-mouth popularization along with a boost in team morale and proactivity, but as it turns out, things are a little more codified than that. TechFlash has what it claims to be the internal memo announcing the free Windows Phone 7 handsets -- from mobile chief Andy Lees, who hasn't been having the best of times lately -- which sets out Redmond's expectation that employees should "evangelize" the product at every opportunity, while also setting aside some spare time before launch to develop apps (but, you know, only if they really want to). The idea, clearly, is to harness Microsoft's massive talent pool to try and get a headstart on populating the Marketplace with compelling content; we're just not too sure the "spare time" bit is going to go over quite as well as the "free smartphone" part. Either way, you'll find the full email from Andy at the source.