Let your pictures look really old and used...

Click here.

The page is in Japanese. But I think it's very easy to use.

Left tab is with the button to browse you disk or the right to enter a URL. And then click the blue button below.
After that a new page will open. From that page you can download your transformed picture.

I looks like the scrapes are always the same. Nothing random here...
But it's nice anyway.

Before...


After...


I found this tip here. A great site with photo tips and tricks...