We've only just worked out that it is a strong candidate for main culprit in the post Florida ranking changes. Exactly how it works is a second tier debate.
Brett might even have thrown us a red herring.
If anyone is completely convinced that CIRCA is approximately the answer and has worked out what factors are used in the weighting of context and meaning I would like to buy you a pint.
PS I'm 95% convinced that CIRCA is the culprit, still got to investigate my own competitor success stories to find the answer and when I do I'm going to buy myself several pints. To get this absolutely in context by pint I'm meaning 1 imperial pint of an alchoholic brew of malted barley and hops with a specific gravity of approximately 4. Beer, bitter, ale et al.