Now to just get to 70.. Any suggestions?

Im 5 boxing elemental Shamen and thus far wow what a experience this has been! Hands down the best WoW experience I have ever had...EVER. But now that im 60 im kinda stuck on where to go and what to do. I dont know of a leveling guide for 60-70 thats really helpful to multiboxers or as I like to call us the anti collection people. That being said the Xp has really started to suffer. Could someone tell me what they did what they are doing or what they plan on doing I would really appreciate it as of right now I feel im in a slump that I cant wait to get out of.

Thanks
-Jon