Dave Aronson wrote:
Vernon Schryver <vjs(_at_)calcite(_dot_)rhyolite(_dot_)com> wrote:
> Let's do some arithmetic. At $10/hour and 10 seconds per challenge
> answered or account created, the cost would be about $0.03 address.
> That sounds a little but not very high to send mail until the
> challenge whitelist entry is deleted by the spam target. It sounds
> low for a valid sender account that can be used for millions of
> messages for days until the free provider notices enough bounces
> or receives a complaint and terminates it.
Does anybody have any actual numbers on how good a return spammers get on
their spam, in terms of, say, cents per thousand spams?
They vary all over the map. Betterly talked about making 5 $300 sales
from a million spams. One of the reported "takes" from the IRAQ playing
cards spammer was on the order of $18 for several million spams.
Note that MSN's DAV system has had a 100/day limit for a long while.
They appeared to implement the human test a week or so ago. (volume
dropped off from about 20,000 per day to a handful).
A little bird talked about DAV abusers registering thousands of accounts
at a time.
_______________________________________________
Asrg mailing list
Asrg(_at_)ietf(_dot_)org
https://www1.ietf.org/mailman/listinfo/asrg