Thought this was of interest, especially for parents. From today's NY Times: "91 percent of people under 30 respond to text messages within an hour, and they are four times more likely to respond to texts than to voice messages within minutes, according to a 2008 study for Sprint conducted by the Opinion Research Corporation. Even adults 30 and older are twice as likely to respond within minutes to a text than to a voice message, the study found.
There are no definitive studies of how many voice mail messages Americans leave compared with earlier periods, but if the technology is heading toward obsolescence —as many communication experts suspect — the trend is being driven by young people. Again and again, people under 25 recount returning calls from older colleagues and family members without bothering to listen to messages first. Thanks to cellphone technology, they can see who called and hit the Send button to reply without calling their voice mail box. “Didn’t you get my message?” parents ask. “No,” their children reply, “but I saw that you called.”