The Mer Wiki now uses your Mer user account and password (create account on https://bugs.merproject.org/)
Contribution
From Mer Wiki
Contributing to packages
Initial setup
Mer uses the [Gerrit|http://code.google.com/p/gerrit/] code review system and has all packages in the Core stored within git repositories.
First thing you should do is to register yourself on [Mer Gerrit|http://monster.tspre.org:8080/] and assign yourself a username, in the following referred to as USERNAME. You can use a Google account or OpenID to authenticate yourself.
