What are other places like this?

[Gil]

Well I did it, now will somebody tell this man to get the hell out of my bathroom!

I'm staying as long as there's hot water!

Also, I think you're out of soap. I ate it.

...

[Atnas]

This other forum seems to have the right idea!

[Photocopier]

metal slug right?

[junkboy]

I only know of Pixelation and Pixel Joint. 

The few I can think of of the top of my head would be TIGforums and Punaji. Not dedicated purely to pixel art, but you see a bunch of it there.
There are a few dolling places like PixelBee as well, but I don't think that's what you're looking for.

[Rosse]

metal slug right?

Yup, once tasted, you're never going to forget the taste of sweet pixelart - just like pixelation.

@junkboy, punaji's back? I think I'll never get that community. As unbelievable creative it is, as unstable it seems. Going to browse it daily again, thanks for posting