Ruh-roh: could the sky already be falling on Windows 8? Nope, not yet, but that’s what a report by ad network Chitika seems to insinuate. Since ads are obviously based on metrics, Chitika has been keeping tally on the number of impressions it receives from users running the Windows 8 Developer Preview, and the company claims that number has dropped dramatically since the Dev Build launched in late September. OH NOES! But does the drop in Dev Build users really matter?