When you click on links to various merchants on this site and make a purchase, this can result in this site earning a commission. Affiliate programs and affiliations include, but are not limited to, the eBay Partner Network.
No, you don't have to be a member. Go to the User Gallery, click "Create/Manage Your Gallery" and you can set one up through the web interface it will give you. Members can post more pictures but you should find that you can still post plenty of pictures.