I know the title of this screams repost, but in my opinion it is not (granted as a long time leecher my opinion equates to diddly squat). This exploit involves using the trick to get lowbies that are unable to queue for Direbrew and a recruit a friend.
Just a few minutes ago I was doing my lowbie direbrew summons with my RAF tanking. I was on a level 44 character and they were obviously 80, but once we had killed Direbrew I was awarded with the recruit a friend bonus exp which in the end gave me 99.3k exp for what was 3 minutes of my time. I do not consider this to be a repost since my recruit a friend was level 80 and I was merely 44 and shouldn't have received the bonus exp due to the gap in level difference. A SS will be uploaded tomorrow after the reset since I was retarded and didn't bother to SS it.
As a quick rundown.
1. Queue with your RAF as Leader on your 80
2. Drop group and log to your lowbie that is 40+ but lower level than 60
3. Get an invite from your RAF and teleport in
4. Kill Direbrew and DO NOT DIE
5. Collect a ridiculous amount of exp due to RAF bonus (Just over 99k @ Lvl 44), along with the other goodies.
Again, shouldn't be a repost and if it is I didn't see anything and I apologize.
Edit: This can only be done once per day I believe, since you are simply receiving the Exp for doing the "daily kill" that also awards the keg.