1. vote for yourself? do u mean vote for your images? if so, then in /includes/functions.php find: if (check_permission("auth_vote", $image_row['cat_id'])) {
replace with: if (check_permission("auth_vote", $image_row['cat_id']) && ($user_info['user_id'] != $image_row['user_id'] || $user_info['user_level'] == GUEST)) {
2. so far the only way I see this could be done is use image, otherwise u wont be able see if the vote casted or not.