Thanks. These are awesome ideas.

I've already got number 1 covered with another website I created, http://badgeplz.com that provides widgets like that. But I think I need to incorporate that into the site as well.

2 - I want to try and aim it at companies organizing events so they can get all photos from the event (taken by real people attending) grouped together easily.

3 - Not yet, not sure if it would make sense though?

4 - Nice! Thanks for the link. I'll definitely be looking into this.