With increasingly time-pressed reviewers, papers with errors, ill-conceived conclusions, or outright fraud can make it through the scientific peer-review process to be published, even in highly regarded journals, writes Julia Belluz at Vox.

The post-publication peer review site PubPeer, which was started in 2012, enables problems with published papers to be pointed out, the anonymous PubPeer developers tell Belluz in a Q&A.