555 is Dead - Clearing Phone Numbers for Movies (hint: Google Voice)
craigormiston.com
craigormiston.com
If you hold the number forever, then a number will be getting wasted every time someone makes a movie that needs to have a phone number on screen or in dialog. Phone numbers are a finite resource, so that's not good.
To fix that, you'd need to get the movie producers together and agree to share numbers, so that only a handful of numbers are tied up for movies--and then we are back to the situation we have now with a handful of 555 numbers being available.
That said I can't see (m)any movies ever caring enough about something like this to bother, when there are still at least some 555 numbers they can use.
They don't need to be. We are used to 7-digit numbers, since that is the limit what a human can easily remember; but there is no reason why phone numbers can't have any number of digits.
In the days of analogue telephony the order of the numbers dialed was important, as the switches used them to narrow down to the actual recipient of the call; but today they're more like URLs, where the whole sequence is taken into consideration. So, while once it was impossible to have numbers 1234 and 12345 in the same area code -- and when they were expanding everyone switched at the same time; I remember that vividly when my hometown switched from 6 to 7 digits some thirty years ago -- today you may have them, and even 1234567 or 1234567890123456789012345677.
I honestly expect that no not so far away future we will ditch phone numbers completely, and instead the phones will be just another technical details we don't bother to remember or even think of, like currently the IP address.
Also, what happens for the tons of viewers watching the reruns in the next decade (or more?) Would the number for Ghostbusters suddenly be the number for a character on Glee? (Sure I guess that's no different than now, maybe I'm just thinking too much into this.)
A google voice number certainly doesn't fit that bill. It can probably get disconnected and put back for the public for any number of reasons. Maybe getting 2,000 voice mails a day is against the TOS, or maybe Google Voice stops being free, or maybe Google continues its track record with discontinued services and bops it over the head like it did Google Wave. (cough http://en.wikipedia.org/wiki/List_of_Google_products#Previou... cough)
If you start it with 555, then you don't need to worry about it.
That's assuming the number even needs to be said at all. There are plenty of ways around it.