[I work at Docracy] There isn't, although you may be able to filter the main RSS feed. That's a good idea, though, we should add a feed to every document... something I will probably do... right now.
http://www.digitalpreservation.gov/formats/fdd/fdd000236.sht...
As a further feature request, it would be really great to be able to flag/vote a diff as alarming, so it could be highlighted for more people can notice it. For example, this diff by Geico is pretty questionable: