For ranged carries, and possibly even melee!
Desolation[Marks] Helps counter armor seals, and helps for last-hitting minions.
Might[Seals and Glyphs] Note. You want the highest AD possible to me multiplied by your IE/PD to maximize your damage by late game.
Strength[Quints] Note. Early-game AD. Helps with last-hitting, and works very well with some early-game crit%, so buy that Zeal as early as possible.
Carry[Offense] = (30/0/0) Focuses on optimizing/maximizing your damage output.
Carry[Defense] = (21/9/0) Gives you some room for taking damage, and may help prevent death and enable escapes so you don't feed so hard.
Carry[Utility] = (21/0/9) Offers some early-game mana, death-timer redux, slight movement speed, etc.. You'll still be pretty squishy though, so...
Infinity Edge [best AD item in the game]
Phantom Dancer [best crit item in game that compliments your I.E.]
Last Whisper/Black Cleaver/Ghostblade(rush gp item first if you're buying this item)[for countering those pesky armor-stackers and/or tanks]
Sanguine[best AD sustain item, best if coupled with some insane crit% and armor pen. to ensure highest possible lifesteal]
Mallet/Entropy [prevent kiters, and control harassers; can also help you escape by slowing harassers down]
Boots (Berserker's Greaves/Lucidity Boots/Merc.Treads) [buy as desired; best AD carry boots are in my list there, imho]
EDIT: Typical scumbag community members with their sadism, sarcasm, and general *ssh*lery. I don't care, though. You guys will realize sooner or later that this is just the best possible balanced AD rune page IP can buy, and that you guys are just being relentlessly down-voting b*tches about it for the sake of taking a huge dump on me, bullying me, and trying to belittle and humiliate me for the sake of getting off.