The document discusses alternative models for peer review in scholarly publishing. It presents several models, including neo-classical peer review, certification-based review, open peer review, commentary-based review, collaboratively-filtered review, institution-based review, citation-based review, index-based review, metadata-based review, computer-assisted review, no peer review, moderator-based review, and tier-based review. Each model is briefly described in one or two sentences with examples provided for some models. The document aims to explore new possibilities for peer review in the digital age beyond the traditional closed peer review process.