That option thingy to buy books?

[quasar987]

A while ago, there was a little thing in PF that allowed you to buy books and a fraction of your expanses would go to PF. Does that thing still exists? I can't find it.

[mattmns]

I am not sure if it is still running, but here is the thread: http://www.physicsforums.com/showthread.php?t=13002

[Greg Bernhardt]

In fact it is still running, haven't advertised the deal for years though.

[Moonbear]

The links for that never work for me. I get a server not found error.

[quasar987]

It used to work for me (3 years ago) but now it doesn't.

http://www.pixelbattle.com

[momentum_waves]

Server not found

Firefox can't find the server at www.pixelbattle.com.