I want to make a site where people can buy the photos that I take and use them as wallpapers on their computers. I need to know, first of all, how to watermark them so that they can't be stolen. Secondly, I need to know if I need the E-Commerce Package on my site to be able to do this.

Another thing I'd like to know is if I need the E-Commerce Package with the PayPal Digital Delivery.

What is the space usage on both freebie sites and with paid sites? I can't find that information anywhere.

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About the site Kim's Crafty Krafts, which I made here, on the freebie site for now, I was wondering if I can change that at any time to be a paid hosted site here, and if so, how? The same with the the above questions, can it be a freebie site, changed to a paid hosted site after we start selling items?

Thanks for all your help in advance.

Kim