On 4 Feb 2014 18:27, "Evgeny Khramtsov" <xramt...@gmail.com> wrote: > > Tue, 04 Feb 2014 09:59:37 -0700 > michael p <mich...@rustyhalo.org> wrote: > > > I'm all for privacy, but I realize I need to trade some in order to > > use other people's free as in beer services. If people expect free > > services to also allow anonymous registration and not somehow to > > become bastions of spammers, they have unreasonable expectations > > (IMHO, but I'm welcome to be corrected). > > Exactly. It is impossible to build SPAM free anonymous network, because > you need an identity to block. The stronger the identity the less SPAM > you have.
Hmmmm... I think the general principle is that you need scarcity. Identity is one such source, and telephone numbers another. I suspect that there's both ways to exploit phones without using the number, and other sources of scarcity.
