brokaddr - 5:35 pm on Nov 10, 2012 (gmt 0)
I know there are a number of threads for this UA already, however, they are too old to respond to: [webmasterworld.com...]
Safe to say a lot of us are being visited by user-agent: facebookexternalhit/1.0 [facebook.com...] -- correct?
How many of these hits are simply trying to access all of your entire /images/ folder - no content specified?
A few IPs:
All visits from these varying Ips are within a few minutes of each other.