im in as long as the themes are general and open to interpretation to get some creativity going....
like spiders would be too narrow...cause everyone is gonna do a macro shot of a spider in their backyard....and the person with the coolest spider is gonna win...
i'd pick a theme like...endurance....texture...light...speed....something where its all about creativity.....
4th of july would be ok cause its 4th of july...but a bunch of firework pics is kinda narrow also...but just as long as every theme isn't like that i would participate.....