My SO account received 5 downvotes within the space of ~2 hours yesterday, mostly against questions I asked. The user started with two, just before the day flipped. Then returned for two more, and the final one was ~30 min after the last batch. To be honest, I was looking forward to a recalc.
Anyways, just hoping the algorithm might be updated so it isn't gamed like this again in the future.
I have no idea of what the algorithm is, but there's a request for my input so I'll suggest that it take rolling time into account rather than end of day (assuming that this is not the case currently). The number of votes between a user pair should be suspiscious, especially given age of the answer/question.