Hosting/Storage of Digital Photos - Best *Free* Services?

I recently uploaded all my 5GB of digital photos to snapfish.com. I'm
not that pleased with the way it displays the images and the lack of
ability to change the color of backgrounds, size of image displayed,
etc. There also seems to be a frequent discrepency in the amount of
files I upload vs. the amount of files that is stored.

Can you tell me who the big players are in *free* and *unlimited*
digital images storage space is so that I can review and decide which
works best for me? Is there an unbiased web site that reviews these
free services?