From the rest of the post referenced above:
Robert Gentel wrote:
Sure, I know you may not like that but this is a free service and I've already lost enough sleep and time with the spam, the crude limit will be in place until those efforts cease and I'm sorry that it inconveniences others.
At some point I'm going to sit down and tweak that to be less crude but like I said, this is a free site and it gets by with what resources it has, the spam has taxed those resources and spread us thin so the spam is being stopped by a crude, temporary, restriction. It will probably be modified sometime this month to something more nuanced.
Yes, PM privileges will be restored, but there is no guarantee when it will happen.
PM privileges were revoked for all new users due to the actions of a handful of users who abused the privilege.