Remember the old Million Dollar Homepage? Here's one for Bitcoin:
http://www.themillionbitcoinhomepage.com/[UPLOADING PIXELS]
Like the original, there are 1.000.000 pixels available for sale. You can upload pixels (free for 24 hours) by clicking on an empty parcel (20x20 px) and pushing the big Upload button. After the upload completes, you will be asked to enter a title, description and URL for your newly uploaded pixels.
[PAYING WITH BITCOIN]
After you've successfully initialized some pixels, click on them again, and a new popup bubble will appear. Look for an (unique) bitcoin address to the bottom of the bubble - that's the address for your pixels. You can make as many payments as you want, in fact anyone can, since the address is visible to everyone.
[PRICE]
The current price for one parcel (20x20 pixels) is
0.01 BTC per day (even if the price changes, existing deadlines stay the same).
[DISCOUNTS]
Each single payment of more than 1 BTC results in
20% more time for your pixels. If you send more than 5 BTC in one transaction, you get
30% additional time. And finally, a payment of more than 25 BTC results in
40% extra time. The discounts are NOT cumulative.
So for example, if you send 1 BTC, your pixels would last for 100 + 20 days. After 120 days, you would have to send some more, to keep the pixels alive.