[robski]

I go along with Duncan on this one. I have several misgivings with the poll system.
In it's favour it is simple to setup and nobody has to think about the vote too much.
Against because the images cannot be submitted anonymously other factors can affect the vote.

I've not been too active recently, either the topic has not inspired or recent events have taken up much of my time.

I think fortnightly maybe a better time frame. If you decide to opt out for one then a month is a long time to wait for the next.