There is a great Retribution guide written by Toolofjesus that's been floating around the Paladin forums for the last month or so. We've been helping him format it and get good information on it. The link to it is here.
There is a protection-spec guide and a holy guide, it seems only fair that there be a retribution guide stickied as well, especially since there are many many questions about retribution that gets asked in that forum. I realize that this will be a 4th sticky, but burying it in the FAQ that is there doesn't seem very fair to people who want to know about the Retribution spec unless all of the other stickys are linked in the FAQ as well, in which case they will most likely be read at a much lower frequency than they have been.
So I nominate it for a sticky, cheers.
Edited, Feb 12th 2008 6:29pm by Darqflame