I was playing with some of the Flickr features. I really enjoyed the Flickr Postcard Browser -- you could view postcards and photos from whatever location you typed in (ex. "Maryland", or "Cypress Gardens", etc.). Really cool. I took a look at the API site that you can register for so you can make your own mashups. Wow, does that seem complicated! My head is spinning -- hard to get used to the technical jargon when you're not used to it.