Icecrown Donation Question

Hi guys, i was reading Premium membership and Donation guide ( http://forum.warmane.com/showthread.php?t=307442 ) on this forum, but i can't find a solution to my question.
This is what is reported on the guide:
"No waiting in the log-in queue on all realms (does not apply to battlegrounds or dungeon finder) (Restricted for Lordaeron)"
"Lordaeron requires 5 coins minimum spent on the marketplace on a SINGLE item in order to permit queue skipping for 30 days."

So my question is:
- A donation done on Icecrown allow me to skip queue FOREVER (on Icecrown realm) or only for 1 month like on Lordareon? Because in the guide this point isn't specified.
I play on Icecrown, so i'm only interested on Icecrown skipping queue.

If you donate (you don't need to spend coins for Icecrown), you will skip the queue for the rest of eternity. I will make that point more clear in the guide.

donate once, skip forever.