I completely agree with moxie marlinspike but...
This article is two years old, and the effort behind the convergence project (http://convergence.io) seems to have moved on to tack (http://tack.io)
This article is two years old, and the effort behind the convergence project (http://convergence.io) seems to have moved on to tack (http://tack.io)
The ones that get permanently removed are generally because they've already gone out of business.