What's yours is mine what's mine is mine what's ours is mine...
It's a very good idea.
But to make things a bit more interesting... we could say have a goal total post... and stepping stone prizes along the way.
Say the goal is to... Reach 10000 posts in the guild.
And the first prize is small at 50posts. 100 posts, 250 posts 500 posts 750 posts 1000 posts 1500 posts 3000 posts 5000 posts 7500 posts and then the big one at 10000 posts
...Marriage & kids... Glade i don't have any.