I dealt with two questions today that seemed on the more elementary side in terms of mathematical content. Geoff Robinson posted some interesting answers, more so than my attempts. Coincidentally, each question received four fairly cogent and in some cases nicely varied and detailed answers.

One of them was migrated to math.SE (http://mathoverflow.net/questions/172983/represent-an-integer-as-a-sum-of-n-non-consecutive-squares) , the other ( Maximum value of the binomial coefficient as a polynomial) not. Why?

In addition to what seems to me to be an inconsistency in policy (I can imagine both migrated or both staying, but not just one of them), I wonder how they participate in accounting. I have no math.SE account formally; is there some entity that tabulates my efforts and will reveal them if and when I do create an account? Are MathOverflow stats affected in any way by future activity on the question? If I don't ever create a math.SE account, will there be ways to search the Math.SE forum for traces of my activity in the future? Basically, how does migration affect the activity and statistics recording for an account that participated pre-migration?

A pointer to the relevant SE documentation would be appreciated.