Comment Re:Back to the future (Score 4, Informative) 78
Because the corporations who started off using these call centers got exemptions to be able to spoof it,
Corporations who run telemarketing call centers didn't have to get an exemption to spoof calling number id services, they simply used the existing mechanisms available to all users of bulk phone services.
Corporations who have their own PBXs have always had a need to be able to specify the calling number ID of their outgoing calls. Those who have multiple outgoing lines often want to have a unified, common outgoing caller id sent that points to their main incoming number.
As for Facebook being able to help out, that's only for people who have told Facebook their phone number. If you're stupid enough to do that, you deserve to have all your data sent to anyone you call. The solution is simple: don't call people you don't want to know who is calling.
And here's another tidbit: you think you suppress your caller id when you call a business, but if you call their toll-free number they get it anyway. They're paying for the call, they get the data.