@dan Slightly off topic, but along the same lines of 'gaming the voting system' I have noticed (along with a few others), there are 30 something accounts that seem to be instantly (<1min after posting) upvoting posts with the tag 'steemit'. Just thought I would post in case you are considering changing the curation reward algorithm anytime soon.
I would imagine this is one, or a few individuals trying to get around the 30min curation reward by upvoting the same content multiple times...