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Thanks for pointing that out!

We've just updated the post. The correct date is: Thursday, January 31st.


OP here -- the numbers are in no way bogus, all sourcing information and methodologies are listed on the page itself (see the bottom left * on each 'slide').

Would love to understand what gave you that impression, as we work hard to build content like this, and hate to see it shrugged off.


unsubscribing costs U.S. retailers about $5.8 billion per year

Utter nonsense.

/end thread


The telling part is that they say...

"Custora's research shows that stores on average lose roughly 1.75% of revenue every year due to unsubscribes."

This is remarkably similar (in amount) to loss through shrinkage at bricks and mortar stores, which is estimated at 1.7% (according to one source I bothered to find) [1] - but while retailers take steps to reduce shrinkage, there is a cost/benefit balance in play and a certain amount is inevitable, maybe the same is true of unsubscribe

I'm more curious about how that 1.75% compares from other sources of lost revenue; how does it compare to the cost of processing returns, or fraud, or just basic transaction costs, &c?

Maybe it's significant, maybe it's noise, but without anything to compare it to, who knows

[1] http://www.jrrobertssecurity.com/security-news/security-crim...


Maybe it's retconning loss figures to a model they already have. If they can fit online expectations to meatspace loss figures, then they don't have to change their models.


Why?

I've read that they offer few benefits, but I've never heard this explanation. I also don't see how it makes sense for a company in their position?


Stock buy backs are used to reduce the number of outstanding shares available - which results in shares increasing in value due to earnings per share now increasing. It is one way to "mask" slowing growth.


For those who prefer electronic versions, My Life in Advertising is available on Google Books for free:

http://books.google.com/books/about/My_life_in_advertising.h...

Scientific Advertising is also available for free (as a pdf): http://www.scientificadvertising.com/ScientificAdvertising.p...


I'm saddened that this is one of the last things to enter the public domain in the US.


only in the US it seems (says "no ebook available" in germany)


Is the data collection methodology described somewhere? I'm questioning the accuracy given an error on our data (GoDaddy is not our registrar, namecheap is).

It's also a bit suspect that namecheap is not listed as anyone's registrar after so many fled GoDaddy for namecheap a few weeks back.


If you're talking about custora.com from my check (which only a registrar can do) you transferred registrar to namecheap at this time:

2012-01-03T05:16:42.0000Z

So yes the data was run before that date.


OK -- the data is definitely out of date for at least one company (ours, custora). I wonder how common this is? Perhaps the cache was not cleared before generating the output?

I forked the repo, ran it on custora.com, and eNom was (correctly) listed as the registrar.

I'm re-running the full ycombinator list now, and will update when finished.


The results are in, and there isn't a very dramatic difference.

Looks like 8 companies have switched away from GoDaddy since the data was collected.

I've issued a pull request to jf for the updated stats.


Merged, thanks!


For those wondering, auto-complete is quite fast.

I've always avoided IDEs that offered this because they seemed to be terribly slow -- pleasantly surprised so far.


does it support any kind of CTags?



Sorry about that -- things seem to be working over here, maybe a browser issue?

Can you contact me directly at jon at custora? I'll make sure we received your request, and figure out what's causing the issue.


We (Custora, YC W11) are hard at work on exactly what you're asking for:

https://www.custora.com/home/tour_lifecycle


This may seem like nitpicking, but I am always worried when I look at a website and the blog hasn't been updated for months. Even a short "Hey guys! We're working on stuff!" would assuage my fears that you've turned into a zombiecorp. =)


How does it work? "the latest algorithms being discovered at leading academic institutions" reads like marketing fluff to me.


Whoops! Thanks for the feedback! That's an old page that was supposed to be replaced on our latest redesign.

The simplest explanation is pattern matching: we analyze customer and transactional data to understand how different customers behave. Using this understanding we can make predictions for how each user will behave in the future.

We use all of that analysis to power actions - take actions on the right user at the right time, optimizing for CLV.

Here's more: https://www.custora.com/home/customer_lifetime_value


That says a little bit more. Do you treat it as a reinforcement learning (RL) problem, or as a classification problem? It seems like a sequential decision making problem, so RL is appropriate but AFAIK there is no RL algorithm that generalises over states while still retaining some error bounds. I suppose you could brute-force a Bayesian solution via MCMC.


There are two big problems that we deal with. First is estimation of customer lifetime value. We use a latent attrition model, which is the 'pattern matching'

The second is figuring out which promotions/emails go to which people. This is a supervised learning problem. We train the model with users past responses to discounts and their past behavioral states (which are the posterior probabilities from the latent attrition model). Then we use this to predict how users in those states will respond to similar promotions in the future.


Are your predictions visible in the web-interface so we can verify if they hold water?


Yes. In addition to the lifecycle marketing product, we have a section of the application devoted to predictive analytics.


Thanks, that's interesting.


Seems to introduce some signaling issues...

The stronger the company, the less likely they are to accept the note at a 3mm cap.


Agreed - seems like the terms could potentially defer the top-quality companies (although most would be happy to have the $ in their pockets), while the start-fund structure makes it attractive to any stage.

I'd hope the money is elective though, as that would certainly solve the problem.


Having quite a bit of trouble down here in south jersey.


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