Hey
I just wanted to let you now before it gets patched (if it gets patched) that now there is a way to link items in macros. I downloaded this addon and tried it out myself and it works great! Once the addon is installed restart your game and make a macro and then just shift click the item into the macro box while its open!
Item Link Macros (Fan Update) : Miscellaneous : World of Warcraft AddOns
I DID NOT CREATE THIS ADDON! ALL CREDITS GOES TO THE CREATOR!