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Forum Moderators: not2easy
Mostly to spread out the bandwidth and load hit. There are some really abusive browsers that request the graphic each and every time they need it (40 msgs in a thread - they'll request the profile and edit icons 40 times each).
It is also a slap to Mozilla that allows "no images from third parties" that was built to thwart advertising. I try to put most graphics on different servers from the domain just for that reason too.
...bunch of new stuff coming to the board rsn.