Note: Since a lot of links go to WoWhead I'd recommend having firefox with noscript and adblock on before proceeding.  Keyloggers like to hide in ads.

What the fudge is a runeblade?
A vampiric runeblade is the weapon that Death knights use.  It is required for casting their class-related spells.  For third generation (Player-made) Death knights there ( Read more... )

http://us.battle.net/wow/en/forum/topic/1008430853  The first one.

http://us.battle.net/wow/en/forum/topic/2721372142  The second one that points out that THE RPG BOOKS ARE INVALID 

Do not take them unless you like doing a batshit amount of grinding until 6-ish in the morning.

...Though getting two Elixir of Giant Growth recipes, 30 mithril, a heap of iron, gold, some truesilver, leather and hides feels kinda worth it.  Also a Dart hatchling and rare mobs.  Eeeeee.

( Cut for wall of text )

SPOILERZ!WARNING ah who cares about some random bint's WoW characters anyway

SPOILERZ

THIS SPOILERZ WARNING IS STILL MANDATORY

( DID I FORGET TO MENTION THERE MAY BE SPOILERS )