Andrea
I recently slipped into the Vice President Category having accumulated 750 points. My points total then went up and down for no apparent reason for a few days. I thought I had upset someone or, like you, I wondered about algorithms
The only factor I could identify for sure, given the time zone you and I work in, the sequence of posts and my rather savage treatment of Joel's late night time wasting post, was that Joel had given me a low vote as it was quite clear from the circumstances of the timings, that only he could have gone so.
I respect his right to give me a hard time too.
When we put our heads over the parapet we must expect the snipers to take the occasional shot.
I gave super girl an extra point today on the basis of the very pleasant holiday I've just had in the Swabisher Alps and all the good work you do on this board.