Source:
http://eu.blizzard.com/support/article.xml?articleId=30562Recruit a Friend F.A.Q
If I recruit a friend before the 6th August 2008 do I get triple experience and Zhevera mount.
No, only accounts that have recruited a friend on or after the 6th August 2008 are eligible for this extra feature. All accounts that have used a recruit a friend before the 06/08/08 will only get the offer of 30 days free added to their account.
What in-game benefits do we get while the accounts we play are linked?
1. Characters on both accounts can summon each other once per hour.
2. While adventuring with your linked friend/family member, you will each gain triple experience.
3. For every two levels the new player earns, the new player can grant one free level-up to a lower-level character played by the veteran player.
How long will I be linked to my recruit?
The link between the accounts will last for 90 days from the date that your recruit creates an account. Remember that for the link to work properly, your recruit must create a new World of Warcraft account using the 10-day trial key in your invitation email.
When my friend/family member upgrades from a trial account to a full version of the game, will that break the link between the accounts?
Nope! Your friend/family member will have to upgrade to continue playing past the 10-day trial, and the accounts you play will stay linked until the full 90 days have passed.
If my friend/family member recruits another friend/family member, am I linked to that person too?
No, these benefits only apply to the person that you referred directly.
Are all players eligible to use the "Recruit A Friend" service?
Players with a World of Warcraft account from the following countries are able to use the "Recruit A Friend" service: Austria, Finland, France, Germany, Italy, the Netherlands, UK, Norway, Sweden, Greece, Ireland, Belgium and Spain. Players from outside of these countries; players with trial accounts, or with full accounts with five referrals from the "Recruit A Friend" service currently pending, are ineligible.
At what point does the triple experience end?
It ends the moment that your accounts are unlinked, or when the new player hits level 60.
Will death knights be able to take advantage of the bonus levels?
Yes, death knights will be able to receive bonus levels, too. But keep in mind that death knights start at level 55 and players stop receiving bonus experience at level 60.
How long will Recruit-A-Friend last?
We have not yet determined how long this promotion will last.
Does this promotion only apply to new subscribers? Can I recruit someone using a Scroll of Resurrection?
This promotion is valid only for new accounts created using an Authentication Key from an email invitation sent from the Recruit-A-Friend webpage. Therefore, you cannot recruit someone who is also participating in the Scroll of Resurrection promotion.
If a player already subscribes to an account (under his or her name) but wants to start a new one (also under his or her name) through the Recruit-A-Friend program, will that second, new account receive these benefits?
If the new account was created using an Authentication Key from an email invitation sent from the Recruit-A-Friend webpage, then yes, it will receive the benefits.
Is my recruit or recruiter automatically added to my friends list?
No. You will need to manually add the character's name to your friends list.
In-Game Features
Are there any limits on when and where I can summon my friend?
You and your recruit may only summon new characters of equal or lower level to the character you are playing. There is a one-hour cooldown on this summoning abilityif you have recruited two accounts you can only summon one of them every hour. Also, once one of the characters reaches level 60, the summon will no longer function.
Will the experience bonus apply only to the recruit's first character? Or all characters linked to the account eligible to receive it?
All characters on the recruit's account are eligible to receive the experience bonus, the ability to grant levels, and the ability to summon.
Do I always gain triple experience while I am linked to my recruit?
No, only when you are partied with a character on the linked account and both players are present when slaying the monster or completing the quest. Also, if the two characters are not the same level, only the lower-level character is given the experience boost. Provided that the monsters / quests are not trivial to any party member.
Is quest experience tripled too?
Yes, but only if the quest was not trivial (gray difficulty) for either character.
Do normal experience rules apply?
Yes, if a monster is trivial to either player, no experience boost is given.
How does this affect / stack with Rest State experience?
While you are partied with a linked recruit, any Rest State you have accumulated is not consumed. Only the tripled experience from the Recruit-A-Friend program is applied.
What if I'm partied with multiple recruits who I'm "linked" to? Do I get quadruple experience?
No, you can only ever gain a maximum of triple experience regardless of how many linked recruits you are partied with.
Are there any limitations to granting levels to characters played by the veteran player?
Yes. The recruit may not grant a level to a character that is equal to or higher than the current level of the character he or she is playing.
Additionally, the recruit may not grant a level to a character that is level 60 or higher.
Can I save the "level-ups" I'm granted and use them at higher levels?
Yes. However, you will lose any unclaimed level-ups when you hit level 60, so don't save them for too long.
If I transfer a character with unused level-ups to another realm, will that character get to keep the level-ups?
No. Unclaimed levels are not moved during a character copy or transfer. Be sure to use them before you transfer.
How does summoning the other player work?
Simply right-click your target's portrait to initiate the summon. You can summon from your party or your friends list.
Rewards
How can I earn the free 30-day credit?
For each person you refer who upgrades to a retail version of World of Warcraft and has paid for his or her first month of game time, the account you sent the invitation from will receive a free credit of 30 days of play time.
Can I use the free 30-day credit on a different account or at a different time?
No, the 30 days of play time are immediately applied to the account you sent the invitation from once your recruit pays for his or her first month.
How can I earn the exclusive in-game mount?
For each person you refer who upgrades to a retail version of World of Warcraft and purchases two months of game time, you will be able to give a character on the account you sent the invitation from an exclusive in-game zhevra mount. This unique mount can be claimed through the website, is only available to Recruit-A-Friend participants, and can only be applied to a single character.
When do players receive the zhevra mount -- after two months or as soon as the recruit has paid for two months?
Players will receive the zhevra mount once the recruit has paid for two months of subscription time.
Can I earn multiple 30-day credits and mounts with Recruit-A-Friend?
Yes! These rewards will be given to you for each account you refer that meets the criteria listed above.
If my recruit cancels the account before purchasing subscription time, can I still earn the 30-day credit or the in-game mount?
If the recruit later comes back, reactivates the account, and purchases subscription time, you will still be eligible for the rewards. Additionally, you can always invite more friends/family members to try World of Warcraft through the Recruit-A-Friend system.
CURRENTLY there is a problem some are experencing with giving the free level for every 2 levels gained to a lower character on the inviters account.We will keep you up dated as problems occur or are fixed
Again thanks to SCXiao for this idea!