If you’re run­ning Win­dows or MacOS, and “do” screen­savers (or even if you don’t, but would con­sider it for a wor­thy cause), go check out Make LOVE not SPAM, a prod­uct of Lycos.

It’s a Denial of Ser­vice attack turned side­ways — the screen saver will send requests for between three and four MB of data a day from sites on spam black­lists, etc., in order to make their band­width costs bil­low out of con­trol, ulti­mately mak­ing spam­ming far more expen­sive than pre­vi­ously thought.

I love the idea, and have down­loaded it here. Do it!