Here is a link to what I am talking about: http://images.mylot.com/userImages/i...os/1992740.jpg
These crimson crystals have been present ever since the Burning Crusade xpac and there has been no clear explanation on what their nature is. They were commonly associated with the Blood Elves, also noticed polluting the Fallen Sky Ridge at Hellfire Peninsula. Moreover, the Draenei have spotted some of them at their starting area and they attempt to clear them.
The same crystal appeared in the revamped Blasted Lands as an actual Blood Magic artifact along with some Blood Mage NPCs. Furthermore, in MoP 5.2 Blood Elf side, we see them using those crystals to channel some crimson energies, while Lor'themar mentions that he found blood magic technology made by the Titans which is to be immediately studied.
I am surprised that no thread has been made so far to look into the subject. Do all of these clues form a picture? Let me hear your thoughts on this.