I'm curious as to why you think that this is a bad precedent. As I see it, it's a good application of the law. The defendants were attempting to hide their telephones' ID to circumvent the "Do Not Call" list. We joined the "Do Not Call" list when it was first implemented, and it cut down on a majority of telemarketing calls. In the last year or so however, there has been a marked increase in telemarketing calls which are either spoofed numbers or no number at all.
<rant>
Frankly, the DNC list is only a halfway measure, and should be expanded. The number of exemptions is ridiculous . We joined it for a reason, and don't want any telemarketing calls, be they commercial, non-profit, charitable, or political. The political calls piss me off the most. The bastards who wrote the law specifically exempted themselves and their political cronies from the reach of the FTC. </rant>



