The good fighters of old first put themselves beyond the possibility of defeat, and then waited for an opportunity of defeating the enemy.
I'll describe the warlord class here at some point.
Right, first things first. We've all seen one of lordduskblade's guides, or one of the many guides that poached his format. This is another one of the latter. I don't go in for quite as many rating levels, and note that I won't be rating anything that isn't an actual choice. I also don't go in for gold ratings; other than a few feat tax feats, warlord builds are varied enough that little is a must-take.
Note that I omit both the typical purple and gold ratings. Most items which would be purple are instead rolled into red; red options aren't necessarily as bad as they are in other guides. Anything which would be gold is sky blue and called out in prose.
Red: You probably don't want this. This option is either uncommonly weak or actively harmful to most builds, and generally you will be best off avoiding these choices. Choices with zero synergy whatsoever with warlords will typically be omitted entirely.
Black: This is a situationally useful choice. Perhaps it's power-neutral, perhaps it's situationally useful but comes at an opportunity cost, perhaps it's just boring.
Blue: A solid choice. This will almost always make you appreciably better.
Sky Blue: These are near-obligatory choices which fit into nearly any build. Some of them are so strong that you'll want to structure the entire build around them.
AV - Adventurer's Vault
AV2 - Adventurer's Vault 2
D XXX - Dragon Magazine, issue XXX
DDM - Power cards packed in with Dungeons & Dragons Miniatures packs
FRPG - Forgotten Realms Player's Guide
EPG - Eberron Player's Guide
MM - Monster Manual
MOTP - Manual of the Planes
MP - Martial Power
MP2 - Martial Power 2
AP - Arcane Power
DP - Divine Power
PP - Primal Power
PHB - Player's Handbook
PHB2 - Player's Handbook 2
PHB3 - Player's Handbook 3
PHR - Player's Handbook Races
Dumpster-diving - The process of digging through many books (or articles or issues of Dragon or whatever) to look for the One True Feat/Power/Paragon Path/item/whatever that will make your character work. Basically, the work involved in writing these guides. Frostcheese - The combination of Frost weapons, the Wintertouched feat, and the Lasting Frost feat, all from PHB. This effect turns all of your attacks into cold-typed attacks, gives any enemy you hit vulnerability 5 to cold, and gives you combat advantage against any enemy vulnerable to cold.
Kicker - An extra ability or effect attached to some other ability or power. An extra effect based on a intelligence would be an "int-based kicker", whereas a Bravura Warlord-only extra would be a "bravelord kicker." Stunlock - The tactic of debuffing enemies such that they cannot take any useful actions. In particular, the tactic of applying a condition like stunned or immobilized, then stacking save penalties so that enemies never lose that condition.
Inspirations and Credits (aka stuff I just ripped off and people who did the work for me):
Thanks to lordduskblade for the format, and to lordduskblade, Armisael, Elder_basilisk, and everyone else who wrote a (better) guide or did the theorycraft on which this guide rests. Anything that sounds especially insightful or clever in this guide was probably their idea first.