What Blogs Can Do
They can get the ACLU to modify their Web site so that, when you sign up, you can opt out of having your contact information re-sold to their partner organizations. That means you can now contribute to them without having to deal with a truckload of junk mail from other do-gooder groups coming for the rest of your life.
Finally! Good work, ACLU.
(Thanks to Doc Searls for the pointer.)