Note that for some applications, in particular for routing programs, not having a well placed centre node can cause problems because they'll then have to calculate a "centroid" from the area geometry, which in some cases can be very inaccurate. For smaller populated places (hamlets, villages, small towns) this is rarely a significant problem though (as most people would usually just want to be navigated to the place, not necessarily to some random mappers pick of a "centre" in it). 
https://wiki.openstreetmap.org/wiki/Key:place#Areas