Welcome Bucknrut, we use a website called http://www.keepandshare.com which is a free file sharing website. Although it is not specific to hunting, the features we like about it is we can share calenders, files, links, To-Do lists, etc. I will say that the picture uploading and tracking part of this website is not very good though and because of this we are thinking about using your website for that part.
Never-the-less, if it helps you out with some ideas, I am more than willing to share access to our group with you so you can see what we are using it for. I think the combination of yours and KeepandShare would make the ultimate sharing website for hunters!
Welcome.