Informal social control is exercised by a society without explicitly stating these rules. This implied social control usually has more control over individual minds because they become ingrained in their personality. See custom and formal social control
Example Usage of Informal
FrancescaBcn: No me digas!!!!! ;-) RT @cataspanglish: Good morning - there are days when I hate being freelance in a country as "Informal" as Spain...
Tsela: Moreover, that course is much more recent than the one I did originally and more Informal. I need to learn more Informal vocabulary.
victorvizcaino: Reading: "No compres mercadería Informal y sé parte de la solución | LA PLEGARIA DE UN PAGANO"( http://twitthis.com/t2dj3k )