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About 3 seconds, it is an approximation (albeit a close one), in the knowledge that your post alone OGF would have had an effect on the last couple of digits.
I have just worked out that a million posts means an average of 365.3 posts every day over seven and a half years.
It isn't surprising OFF is so popular, is it?
Come on folks, lets see if we can increase that average to get to the next million posts.