[Asrg] differential confidence

[John Levine]

>>>    I've often wondered whether you could do something with timing
>>>    the longevity of things in people's inboxes as first order
>>>    approximation of "value".
>>
>> It's been done.  Not sure if it proved more effective than spam/not-spam
>> votes, though.
>
>Details? This is a pretty open ended subject.

There's been papers at CEAS conferences.  See wiki.asrg.sp.am for links
to the conference proceeding pages.

R's,
John