A completely unsubstantiated rumor floating among day traders has RIM stock up a pretty penny today, suggesting that Microsoft may be looking to acquire Waterloo’s finest in response to Google’s meddling in the mobile space. At this point, pundits seem to be merely saying that it “makes sense,” not that they’ve actually caught wind of anything substantial — but we’re kinda hoping Microsoft doesn’t get any ideas here. We’re not seeing Microsoft pushing a non-Windows Mobile based platform onto licensees any time soon — particularly one that relies as heavily on Java as the BlackBerry OS does — and a BlackBerry-branded device running Windows Mobile makes about as much sense as a Mac running Wind… oh, wait.