Digital Scrapbooking

I visited Scrapblog and created a pink postcard that contained my picture in the middle, a pink gemstone on the right-hand side, the words "oh la la", and a Kiss Me stamp. I tried to copy and paste it to my blog, but it wouldn't let me. So, I couldn't post my layout, but I had a fun time creating it. I think digital scrapbooking is a fun way to organize your pictures and it is less time consuming than doing the manual scrapbooking. Scrapblog lets you post your image to a social website (Facebook, My Space, Flickr, etc.), but I don't know why it wouldn't let me save it to my computer or let me copy & paste it to my blog?