I recommend putting your tiles together into a single mock-up. That way your gallery (and PJ) aren't as cluttered, and people can actually give you feedback on the tiles. A tile on its own is hard to give feedback on, since people can't see how it tiles and how it works with other tiles. A mock-up provides the necessary context, and just makes a more interesting artwork to look at.
Want to give some dough back to all those amazing pixel artists? Donations provide prize money for contests, help cover hosting costs and support new initiatives.
I recommend putting your tiles together into a single mock-up. That way your gallery (and PJ) aren't as cluttered, and people can actually give you feedback on the tiles. A tile on its own is hard to give feedback on, since people can't see how it tiles and how it works with other tiles. A mock-up provides the necessary context, and just makes a more interesting artwork to look at.