In case you’ve missed this one, an interesting analysis was recently published in Nature on citations of manuscripts published in predatory journal. If you contrast with a previous post of mine (here), when considering all journals about 24% of publications get 10 or more citations. This falls dramatically for predatory journal. More importantly no paper get over 32 citations in those journals while 1.8% of all published manuscripts get over 100 citations in general.
Source: Predatory-journal papers have little scientific impact
Ruminating... 