Much that I cringe at big business, I have to hand it to Pearson for their smart marketing. I think a lot of this project's appeal is in making OER easily searchable and accesible from one central location. I know there are ways to do that for free out there, such as OpenDOAR, but Pearson's looks a lot slicker. Of course Pearson's own content is readily visible in searches, at least according to the screenshots. This does not seem to be an unbiased OER search engine.