Nice looking! Although I would never consider using them as wallpapers.

I see the biggest drawbacks as lack of physical presence and value fluctuation. The others seem to me to be soon fixed.

OK, I'm looking for peoples ideas as to how bitcoin could be used in-store to buy things. I saw bitbills and although its some amount of progress it doesn't provide a good solution. I your suggestions please use technology available today and provide links so we can understand exactly how your idea works.

One of my ideas have been: An app on an iPhone that contains your Bitcoin wallet. When the cashier rings up the amount, the amount is communicated to the app and the app generates a QR code that, when scanned, completes the transaction.

looks good guys! nice job!

i won once but lost other times

I am interested. I have a good eye for design although not as much for writing