Crowdfunding vs ad support

Another example of crowdfunding vs. ad support (previous example here):

To manifest this grand vision, we are officially launching a Kickstarter-esque campaign. We will only accept money for this financially sustainable, ad-free service if we hit what I believe is critical mass. I am defining minimum critical mass as $500,000, which is roughly equivalent to ~10,000 backers.

via Announcing an audacious proposal by Dalton Caldwell.