publishing agreements do provide what many authors want in OA publishing–free online access and broad reuse rights to users. But, if authors select the wrong option, they are also giving away their own residual rights while granting Elsevier or Wiley the exclusive right to commercially exploit their work. That includes the right for those publishers to exclude the author herself from making or authorizing even the most basic of commercial uses, such as posting the article to a for-profit repository like Researchgate or even SSRN. This is not a result I think most authors intend, but it’s hard to spot the problem unless you read these publication agreements carefully.