I do always as well as I reply posts, I think it's importat to everyone shows your opinion and support a well done job. How many more participate will be even better this shows how interesting this board is, our place to be.
I try to vote every month. I also like to vote for the BEST submission not just someone that has not won yet. If a person puts the effort in to write a review that stands out I will vote regardless if they have won previously. Keep those reviews coming.