Now this is an idea I can really put into use.
Lifehacker has suggested creating a silent ringer for non-priority phone calls on your cell phone.
From a Lifehacker reader:
My cell phone (like most) lets me select a custom ringtone for each contact in my phonebook, however there’s no option to set an individual entry to “not ring”. So I just created a 1 second long recording of “nothing” using my computer, transferred it to my phone, and I can now select it as a custom ringtone for numbers that, while I don’t want to block, I just don’t want to hear.
Why would you want to do this? Well I’m sure you have people in your cellphone book that you don’t need instant notification of their phone call and/or don’t want to be bothered by their phone call. I’m going to try and set it up for folks who aren’t in my phone book. I never answer those calls anyways – might as well not have to worry about hearing the ringer go off.