I used wordpress for a long time too. CarraraLounge was first a wordpress, but people just could add comments to the posts (the gallery for wordpress that time was very frustanting for more them one user). Now theres a version for wordpress that add social network too that looks good, but Elgg looks more better designed for community... You can post your images at CarraraWorld, my hoster give me unlimited bandwidth.

Follow me at euQfiz Digital