This is also a topic I'm interested in, as I'm gathering more and more portfolio pieces, and I'm having a hard time figuring out where to put them all for easy viewing. I think that finding communities like this, or any of the other art communities touched upon is a good way to grow your brand. Having a website also seems like a good idea, but I would probably stick to the free ones (wix/wordpress, ect) until demand becomes high enough that having your own professional url becomes a concern.