Londiste is a nice replication software published by Skype, part of the SkyTools module found on pgfoundry. As I'm using it and participating as much as I can (mainly documentation work), this section will provide some documents I find the time to write.
At the moment only the old version of the Londiste HowTo is available, it needs to be rewritten to match SkyTools version 2.1.5 and following.