Marcel,

You can circumvent the issue by making the receiving of a DM that is
sent to a list dependent on two triggers:

a) You must follow the sender of the DM; and

b) You must explicitly double opt-in to receive DMs that are sent to
the list.

Bona fide use cases will be able to acquire the double opt-ins from
interested users, while most people will simply not opt-in when
MarketerMario adds them to his list.

Dewald

On Nov 10, 2:34 pm, Marcel Molina <mar...@twitter.com> wrote:
> As with all things, there will certainly be vectors for abuse. For
> every bad use case, there are just as many or more positive use cases.
> We'll certainly be thinking about many on both sides. Thanks for
> pointing out some of the potential hazards.
>
>
>
> On Tue, Nov 10, 2009 at 10:28 AM, Dewald Pretorius <dpr...@gmail.com> wrote:
>
> > Marcel,
>
> > How would that be different from sending bulk DMs - something I have
> > been advised in the past is not something that Twitter condones.
>
> > Here's the scenario.
>
> > MarketerMario has 2,000 followers. He creates four lists and adds 500
> > of his followers to each list. Now he can send, with four simple
> > clicks, his tweet whitening affiliate link to all his followers.
>
> > Dewald
>
> > On Nov 10, 2:19 pm, Marcel Molina <mar...@twitter.com> wrote:
> >> That is indeed an interesting idea that we've been thinking about. The
> >> rules around who can send and receive DMs would continue to be
> >> enforced as normal, so for talking purposes, if you DMed a list, only
> >> those who follow you would receive it.
>
> >> On Tue, Nov 10, 2009 at 9:21 AM, Marcus Better <mar...@better.se> wrote:
>
> >> > -----BEGIN PGP SIGNED MESSAGE-----
> >> > Hash: SHA1
>
> >> > Hi,
>
> >> > have you considered adding a mechanism for sending a sort of "direct
> >> > message" to a list?
>
> >> > This would allow users to send targeted tweets to a list (provided the
> >> > user is a member of the list). It could be incredibly useful. For
> >> > example tweets on a specific topic could be targeted to a selected
> >> > interest group, without bothering your general followers.
>
> >> > Currently the only granularity provided is "whole world" (tweet) and
> >> > "single recipient" (direct message), but this would allow new use cases,
> >> > for example something similar to a mailing list.
>
> >> > Cheers,
>
> >> > Marcus
> >> > -----BEGIN PGP SIGNATURE-----
> >> > Version: GnuPG v1.4.10 (GNU/Linux)
> >> > Comment: Using GnuPG with Mozilla -http://enigmail.mozdev.org
>
> >> > iEYEARECAAYFAkr5oQUACgkQXjXn6TzcAQk+PgCfemGcdxyqZZrg1tNsxTWhna39
> >> > gdAAoLJZHsM8yIqxzpHMp3XlYue2ODpz
> >> > =ARYR
> >> > -----END PGP SIGNATURE-----
>
> >> --
> >> Marcel Molina
> >> Twitter Platform Teamhttp://twitter.com/noradio
>
> --
> Marcel Molina
> Twitter Platform Teamhttp://twitter.com/noradio

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