We've thought a lot about this, but not done anything formally yet.  There is an example of this happening to improve the disease ontology presented in this paper [1].

Mechanically, parties interested in a particular swath of data linked to their resource could set up repeated SPARQL queries to watch for changes.  Beyond that, the core mediawiki API could be used to create alerts when new discussions are started on articles or items of interest.  

At some point we hope to produce a reporting site that would aggregate this kind of information in our domain (feedback and changes  by the community) as well as changes by our bots and provide reports back to the primary sources and to whoever else was interested.  (Maybe we will see a start on that this summer..)  This hasn't become a priority yet because we haven't yet generated the community scope to make it a really valuable source of input to the original databases.  

[1] http://biorxiv.org/content/biorxiv/early/2015/11/16/031971.full.pdf