Authors who cited flawed work fail to warn readers even when it is pointed out. Study found 39 of the 88 citing papers had drawn conclusions that, if the retracted papers were left out of the analysis, were likely to be substantially weaker.
https://www.science.org/content/article/zombie-papers-wont-die-retracted-papers-notorious-fraudster-still-cited-years-later
https://www.reddit.com/r/Open_Science/comments/vsqb27/authors_who_cited_flawed_work_fail_to_warn/?utm_source=ifttt
If we combine the Retraction Watch database with the Open Citations database and provide an API, we could make a system where journals, review systems and reference managers could automatically flag papers that cite retracted papers.
Is anyone interested in working on such a system?