VolunteerInformation
My parents strongly warned me never to volunteer information. The dangers inherent in volunteering information tend to be obvious to adults and less so to children. This pattern is typical of what we call "WaysOfTheWorld".
You don't VolunteerInformation, because someone is prompting you for information. They do that because they want that information. The problem is that you have no knowledge of what they want it for? Is it to sign you up for a 5 year contract for magazine subscriptions? To gather metrics about the local neighborhood for better marketting?
We rarely just blurt out information without some form of prodding/query. But in social situations we will generally surrender personal information easily. You probably wouldn't do so if you were just approached on the street by a stranger, but in a situation you feel comfortable/secure in, you will.
One way to VolunteerInformation would be to automate the process. Private accumulation of information volunteered incidentally to consumer transactions is highly automated. The resulting aggregate product is of course highly prized and closely guarded. The trick to implementing PubWan is persuading people that it costs them less to VolunteerInformation directly to the public domain, even though the process is (at this point, anyway) less automated. The cost of informational passivity is loss of TransParency.