Thanks for your help, you can follow this link in order to register the required Garage account:

https://garage.maemo.org/account/register.php

After that, login in maemo.org (different than talk.maemo.org) and start clicking on the links on my list and voting. You can easily start with apps that can be voted down, they take about 5 secs each one for seeing what it's wrong with them. If you have troubles in following/understanding testing rules, just ask!