The Mer Wiki now uses your Mer user account and password (create account on https://bugs.merproject.org/)
Community OBS
From Mer Wiki
Getting started
Mer OBS is a community's Open Build Server. It's a powerful tool to compile, build and deploy your Mer-based software.
You'll need:
- A merproject.org account -> create on https://bugs.merproject.org/createaccount.cgi
- basic knowledge of rpm packaging technologies
Afterwards login into https://build.merproject.org/