There is a p2p social network (as in, people offering there services whatsoever) in France that does exactly this: it's called "Gens de confiance". It works wel

There is a p2p social network (as in, people offering there services whatsoever) in France that does exactly this: it's called "Gens de confiance". It works well, although it creates kind of a gated community (as intended: it is mainly meant for upper-class social circles).