How about once a month we set a photographic theme? For example: July could be Water (Nice easy one for openers). Then everyone can post photos on that theme and at the end we should end up with an interesting album.
As we go on the themes could be more challenging, cryptic, odd, funny; The Fight or Optimism for example could be interesting. Or Never Again.
Perhaps we should think of it as a caption competiton in reverse. You start with a caption and add a picture.
Well I suppose the only way to see if people are interested is to try it.
So here goes.
July. Water.