What is unsolicited, unwanted email?

This article in the New York Times, while driving home a sad and painful situation we academics all share (not being able to provide our students with all the attention they want), also illustrates the problem faced by any incentive system to discourage unwanted email: where is the boundary?
The article discusses the increase we all have experienced in email from students, sometimes inappropriate or unreasonably demanding (not always!). Clearly, some of this mail we would rather not receive. But what filter or incentive system or other mail management mechanism can tell which mail from our students we don’t want to receive? The possibilities for Type II errors are a bit scary.


Misleading recommendations: payola

Payola probe turns from labels to radio
As I mentioned a couple of entries ago, payola (“pay to play”) schemes are still ongoing in the radio and music distribution industry. Sony and Warner settled with NY State for millions; now Attorney General Eliot Spitzer says he has proof that some of the largest radio groups have taken payments from top executives in the recording industry.

Screening for Good (email) Actors

Dave Crocker of Brandenburg Consulting wrote a message today to Dave Farber’s “Interesting People” mail list in which he made the following observation:

We must continue with efforts to detect and deal with Bad Actors, but there is a separate path that is at least as valuable: We need methods for distinguishing Good Actors. Folks who are deemed “safe”. In effect, we need a Trust Overlay for Internet mail, to permit differential handling of mail from these good actors. In general terms, a trust overlay requires reliable and accurate identification of the actor and a means of assessing their goodness.
In other words, authentication and reputation.

Crocker is talking about screening for “good actors”: some test that distinguishes trusted senders from the rest (this is not necessarily equivalent to identifying “bad actors” because there may be a vast middle that is neither good nor bad). Screening mechanisms are one of the two categories of fundamental mechanisms for dealing with hidden information problems, the hidden information in this case being the sender’s private knowledge of whether she is a good or a bad type.

Continue reading Screening for Good (email) Actors

Incentives to misrepresent

Hotel Reviews Online: In Bed With Hope, Half-Truths and Hype – New York Times
The NYT discusses an increasing problem with informal review and recommendation sites: insincere or misleading postings. Here, they talk about hotels that either post fake (positive) reviews about themselves, or that offer inducements (discounts, etc.) to customers to post positive reviews, or that bribe web sites and blogs to remove negative reviews.

Continue reading Incentives to misrepresent