Since Weirs Guy asked I grabbed a frame from todays webcam and added an arrow to point out what I think people are talking about. Then I got curious myself so I borrowed some time on the company's Cray and through some very advanced and, dare I say it, hush hush image enhancement techniques I was able to just, and I say maybe, make out what the object is. I think it's a sign that blew in. Look for yourself and see what you think.