How do you add new features to a distributed system? Anti spam was the most needed tool, and it never arrived. Even if you just offer the ability to have 3rd p

How do you add new features to a distributed system? Anti spam was the most needed tool, and it never arrived. Even if you just offer the ability to have 3rd party clients to your closed system you still have the problem of distributing new features, that's why there's only 1.2 browsers now