Donation subscription page

Maria Popova runs a huge blog (3m+ visitors/mo) and supports it through donations only. This is the simple pitch for donations at the bottom of each article:
This is an email newsletter signup form by Digg creator Kevin Rose. It's extremely simple, and includes an interesting number that caught us off...
Contemporary artist Tom Sachs offers limited edition works of art as well as merch on his website. In order to make a purchase on...
A simple guide to famous pirate flags and their owners. It breaks down the cool designs and tells you which flags belonged to legends...
Chick-Fil-A uses cows to sell their chicken as part of their outdoor campaign.