A previous discussion on pretty much the same topic;
https://lists.openstreetmap.org/pipermail/talk-in/2011-August/001502.html and the following posts.
Note the reference to ethics in one of the later posts. We ought to remember that ethical behaviour is necessary for any activity that affects other people. The consequences of OSM labelling areas as ‘shanty’ could be grave for the inhabitants of that area, and it is conceivable that such tagging could have an ulterior purpose. Any references to shanties or slums should be removed unless it is clear that the residents accept it.
