One of the reasons we suck is because we don't let you submit PNG images to the site (except for world posts and avatars). That's going to change, BUT what's funny is that people are STILL submitting PNG images to the site, they're just renaming them from .png to .jpg so that our system accepts them.

That's why sometimes on the main page you see a black square instead of the actual work.

Otakus find a way.