This document discusses the challenges and benefits of open educational resources (OER). It outlines five challenges of OERs, including the large number of choices available, determining the credibility and authenticity of sources, and difficulties finding collaboration. However, it also lists five key benefits: the ability to customize materials to student needs, allowing students to work directly with source materials, reduced costs for students, access to more current information, and the collaborative nature of sharing educational resources openly. The conclusion is that OERs are more of a "treasure trove" than a "black hole" due to these benefits.