Drupal Association members fund grants that make connections all over the world.
In the Sharing tab for Languages, add the option to make "Offline remote translation synchronization". This should be done by storing a list of the local translations made (in case it doesn't exist) and sending it by Cron/Update operations, or through a "Manual Sync" button. The main advantage of this is to make it faster to translate (the synchronization process takes around 1-2-several seconds that can make a difference when you are translating several strings).
BTW: Being Portuguese, I want to configure the remote localization server as Portuguese (pt-pt). However, when I try to change the server URL from http://localize.drupal.org to http://localize.drupal.org/translate/languages/pt-pt (which I think it's the right one), I get the following error:
Invalid localization server address specified. Make sure you specified the right server address.
What is wrong? I've the key-API defined!