The LDraw Steering Committee (SteerCo) has been questioned about LDraw.org's policy (as expressed by the Contributor Agreement [3], other documentation, or tradition) on third parties capitalising on the considerable volunteer time, effort, and ingenuity represented by the part library and the LDraw system?

As stated in the README text [4] for the LDraw Parts Library, licensed by the Creative Commons Attribution Licence 2.0 as specified by the LDraw Contributor Agreement [5] (CA), the SteerCo does not believe that rendered images of models, created by the LDraw Parts Library and used in building instructions (on- and/or offline), books or posters, are covered by the copyright of the parts. LDraw.org will not attempt to enforce any such copyright as may exist. As such the release of rendered instructions using the library are believed to be covered only by the licenses of the software used to create them.
POV-Ray files - containing some or more converted parts from the LDraw Parts Library - used to generate said renders are considered derivative work and would require proper attribution.

Should any person wish to use LDraw models for building instructions or other rendered images for sale or otherwise the LDraw SteerCo would appreciate that the items include due credit to reward the efforts of all those who have contributed to the library. Furthermore, where possible, the SteerCo would also appreciate a donation be made to Peeron.com as hosts of LDraw.org (a Paypal Donation Button can be found in the top left-hand corner of LDraw's homepage). This is, however, not by any means a requirement.
Paying tribute to the fact that LDraw.org is a completely volunteer organization the SteerCo prefers workmanship contribution, such as part authoring, parts reviewing, writing programs or tutorials over financial return.

The LDraw.org Steering Committee