For those of you familiar with DotNetNuke, you will be interested to learn they have implemented a benefactor program to help support the DotNetNuke development effort and provide additional access and value to the benefactor. Here's a summary:

Benefactor Program Goals   
The DotNetNuke Benefactor Program was created with the intent to preserve the delicate balance between the needs of the open source community, the serious business ecosystem it has fostered, and the on-going management of the project. The Benefactor Program provides the ability for community members to gain access to a premium set of layered benefit packages; with each level designed to satisfy the needs of a specific stakeholder group. In order to appreciate each of the Benefactor Program levels being offered, it is first necessary to understand the specific requirements of each group.