1. 15 Reasons Why Warlords of Draenor is Better Than MoP
A very good presentation of the next expansion. If you are still undecided, watch it. And subscribe!
2. In many cases gems from past expansions and the current one offer the same stats. Don't throw them away when you do old content! Onyxia? Mount Hyjal? Sunwell? Sartharion? Too bad the raw gems are no longer sold by vendors. Examples:
Those unique equipped gems from TBC? Use them :) Facet of Eternity Fallen Star
PS: I may update the post once I've remembered more of the good things I initially intended to put here!
3. Warlords of Draenor Mount Collector's Guide
4. Mute Annoying WoW Sounds. Shut up, Rhonin!
If you are updating from Mists to Warlords (5.4 to 6.0), completely delete the old Sound folder aswell as the Cache folder. This AddOn no longer installs to World of Warcraft>Data, instead install it directly to your World of Warcraft folder.