I have heard mixed reviews about Igive.com. I give promotes its self as a way for people to help their favorite cause for free. Every time people use the site to search for products on line they are charged A penny a search and a portion of each purchase is donated to the persons favorite cause. What I have heard is that if you sign up with them, they will send out emails to people that look very much as if they are from your organization.
The best group I have heard of to sign up with for extra funding is amazon.com You get 4% of whatever your donors spend if they enter through your website first. It raises a nice amount of funding for your programs each year.
Is there any funding sources or ideas you have heard about or would caution others about?