I would just like to point out to those who have been posting load times for the other sites. You cannot compare site load times, one has nothing to do with the other. Apples and Oranges. The routing of each stream takes a different path through different sets of relays, hubs and so on. when bottlenecks do occur on the network, very complex algorithms set rerouting scheme. Back in the day a network center would do this manually. That's a thing of the past. The algorithms will set of traffic patterns in a logic way, which may not be the Shortest path, delays do happen in high density areas of the path.
In short, Hub A, B, and C all connect to a domain
http://air-source.us and each one is connected to you guys and myself. If we all put a "Network Sniffer" on your ISP connection at your house. Everyone of us would view a very different route/time of round trip/and lag time for that node. There might me only 100 nodes between myself and air-source, roy might see only 50 nodes, the crew across the big pond might see only 5... the connections that are on a quite link/node connection will have the fastest page load times, even though they might be Thousands and thousands of miles from air-source.
That's the network, oh did I say those connections to hubs and relays change by the Millisecond - +
This is only one floor of a center I used to work at, believe it or not. on a network we are only a tiny dot on a massive massive world wide system.