aristotle - 8:17 pm on Mar 5, 2012 (gmt 0)
BTW, Facebook doesn't hotlink, because it copies & hosts your images on its own servers.
You could be right. But if so, why do I sometimes see a flurry of activity in my logs from facebookexternalhit fetching the same image repeatedly within a short period of time. If they store it on their servers, why do they need to fetch it more than once?