The server is open for submissions. Please do. All you have to do is fill out a form.
A while back I posted here about a paclet server, which is to say a repository for Mathematica packages which people can easily install and use
The key, here, is the easily. As in single-line installation and integrated with all of Mathematica's standard tools.
The server is hosted on GitHub and so everything is open source and anyone can contribute. The deployment is done with GitHub pages as the cloud is still insufficient for a number of reasons. There is also a GitHub Wiki that provides notes on how you can install from the server, upload to the server, etc.
This server has been slowly evolving over the past just-under-a-year as I get a better handle on how to make it easier to add paclets, easier to customize, and nicer in general.
I decided to start this thread to track this progress in a place that Mathematica users would see.
Any suggestions people can provide are greatly appreciated and feel free to communicate with us on Gitter for potentially faster discussion.