Edited sentence: A few, youth rights groups in particular, claim that it is unconstitutional.A number of other general-audience websites stopped offering services to children at all.For sites that comply with COPPA, many administrators will disable or delete the accounts of users who are identified as underage.Many say that it is not enforceable at all, since children can very easily claim they are 13 or older (e.Ostensibly because of the cost incurred in complying with the regulation, one of COPPA's largest impacts was to cause a number of websites that catered to children to shut down entirely.The law is criticized for unnecessarily and severely restricting children's website activity in practice.While children under 13 can theoretically join communities that require personal information given parental permissions, many sites still opt to completely disallow underage users, usually because the paperwork is too much of a hassle.by entering a fake date of birth)