The economics of spam

Junk emails cost $20bn a year. Not just an irritation.

Here's a fascinating new paper (pdf) from the Journal of Economic Perspectives on the economics of spam, by Justin Rao and David Reiley:

The negative externalities imposed by spam include wasted time for consumers: both wading through irrelevant advertisements in one’s inbox and missing an important message that went to the junk mail folder. They also include the costs important message that went to the junk mail folder. They also include the costs of server hardware, which requires more than five times as much capacity as would be required in the absence of spam, as well as the costs of spam prevention services provided by firms to reduce the burden on users. . .

Taken together, the total costs of spam worldwide today appear to be approximately $20 billion, in round numbers.

The authors review literature on the revenue of spammers, and find that it's likely to be around $300m a year. In other words, spam destroys around $19.7bn dollars of value every year. The authors compare this to car theft, which imposes societal costs of around $10bn and brings revenues to the thieves of around $1bn; and to driving a car, which imposes societal costs of around five cents a mile and brings in average revenue of around 60 cents a mile.

Clearly all these numbers are extremely rough estimates, but if they are even in the same ballpark as the truth then it is clear that spam ought to be a public policy priority to a far greater extent than it actually is. Imagine if the number of car thefts doubled overnight; would people really question whether that calls for governmental involvement?

The problem the authors identify is one of negative externalities, similar to the issues raised by carbon emissions. So one would expect the solution to be analogous to the solution economists often call for to deal with externalities, which is a Pigovian tax - charging someone who harms society an amount equivalent to the damage they do. Unfortunately, as the authors show, such a measure is pretty much impossible when it comes to email spam. The spammers would obviously not co-operate, and every alternative involves trying to graft on some form of payment mechanism to email, which is a protocol incredibly unsuited technologically to any such addition.

Instead, the best thing to do is probably to hit the spammers where it hurts: their revenues.

One fruitful avenue is to put legal pressure on domestic banks that process payments from foreign banks known to act on behalf of spam merchants. This could put downward pressure on conversion rates and with them, proifts. Another proposal comes from our colleague Randall Lewis, who imagines “spamming the spammers” by identifying spam emails and placing fake orders on spam-advertised stores. This step would increase the merchants’ costs dramatically, as they would find it much more difficult to fullfil orders, and their banks may raise their fees if they submit many invalid payment authorization requests. Of course, an unintended consequence is that from time to time, a legitimate merchant will be inundated with bogus product orders.

Commenting on the paper, Digitopoly's Joshua Gans points out that, under US law, that may not be entirely legal:

A few years back I contacted Yahoo and Google with an idea to counter spammers. What if for each spam email that they picked up, they responded — perhaps entering details into phishing forms? This would overwhelm spammers and they would not be able to find ‘legitimate’ responses from the gullible few. That would really alter their returns. Unfortunately, it was explained to me that such a measure would constitute an attack by a US corporation and, apparently, that is against US law.

Spam may be here to stay, then. The real solutions are technological, and don't involve fixing email so much as abandoning it altogether; the time for being able to accept free, unsolicited email from anyone seems to be coming to an end. Those who are trying to build its replacement will be happy indeed to hear that.

The full paper is a surprisingly good read; if you're looking for something to flick through on an e-reader over the weekend, why not give it a go?

Spam, spam, spam, spam, spam, spam, spam, spam, lovely spam, wonderful spam. Photograph: Getty Images

Alex Hern is a technology reporter for the Guardian. He was formerly staff writer at the New Statesman. You should follow Alex on Twitter.

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Labour is a pioneer in fighting sexism. That doesn't mean there's no sexism in Labour

While we campaign against misogyny, we must not fall into the trap of thinking Labour is above it; doing so lets women members down and puts the party in danger of not taking them seriously when they report incidents. 

I’m in the Labour party to fight for equality. I cheered when Labour announced that one of its three Budget tests was ensuring the burden of cuts didn’t fall on women. I celebrated the party’s record of winning rights for women on International Women’s Day. And I marched with Labour women to end male violence against women and girls.

I’m proud of the work we’re doing for women across the country. But, as the Labour party fights for me to feel safer in society, I still feel unsafe in the Labour party.

These problems are not unique to the Labour party; misogyny is everywhere in politics. You just have to look on Twitter to see women MPs – and any woman who speaks out – receiving rape and death threats. Women at political events are subject to threatening behaviour and sexual harassment. Sexism and violence against women at its heart is about power and control. And, as we all know, nowhere is power more highly-prized and sought-after than in politics.

While we campaign against misogyny, we must not fall into the trap of thinking Labour is above it; doing so lets women members down and puts the party in danger of not taking them seriously when they report incidents. 

The House of Commons’ women and equalities committee recently stated that political parties should have robust procedures in place to prevent intimidation, bullying or sexual harassment. The committee looked at this thanks to the work of Gavin Shuker, who has helped in taking up this issue since we first started highlighting it. Labour should follow this advice, put its values into action and change its structures and culture if we are to make our party safe for women.

We need thorough and enforced codes of conduct: online, offline and at all levels of the party, from branches to the parliamentary Labour party. These should be made clear to everyone upon joining, include reminders at the start of meetings and be up in every campaign office in the country.

Too many members – particularly new and young members – say they don’t know how to report incidents or what will happen if they do. This information should be given to all members, made easily available on the website and circulated to all local parties.

Too many people – including MPs and local party leaders – still say they wouldn’t know what to do if a local member told them they had been sexually harassed. All staff members and people in positions of responsibility should be given training, so they can support members and feel comfortable responding to issues.

Having a third party organisation or individual to deal with complaints of this nature would be a huge help too. Their contact details should be easy to find on the website. This organisation should, crucially, be independent of influence from elsewhere in the party. This would allow them to perform their role without political pressures or bias. We need a system that gives members confidence that they will be treated fairly, not one where members are worried about reporting incidents because the man in question holds power, has certain political allies or is a friend or colleague of the person you are supposed to complain to.

Giving this third party the resources and access they need to identify issues within our party and recommend further changes to the NEC would help to begin a continuous process of improving both our structures and culture.

Labour should champion a more open culture, where people feel able to report incidents and don't have to worry about ruining their career or facing political repercussions if they do so. Problems should not be brushed under the carpet. It takes bravery to admit your faults. But, until these problems are faced head-on, they will not go away.

Being the party of equality does not mean Labour is immune to misogyny and sexual harassment, but it does mean it should lead the way on tackling it.

Now is the time for Labour to practice what it preaches and prove it is serious about women’s equality.

Bex Bailey was on Labour’s national executive committee from 2014 to 2016.