I have agreed to help a national charity (fairly small) to raise awareness about a new campaign they're starting. I am doing this for free because it's a cause I feel strongly about. What's the best way to give away free, no-obligation information (a PDF) in large volumes? I am not making money off of this, but I didn't know which forum to post this in. I'm willing to use paid advertising if it's effective but the only things I've given away were affiliate offers and the like, so legitimately free material is new to me. How do I distribute this free informational PDF in large quantities without paying a fortune? I use PPC to promote affiliate offers but this type of traffic is way too expensive for something I'm doing for free. Any and all help would be much appreciated.