Well the first part of this is really pretty useless, because it is so conditional, but it is an exploit nonetheless, so I'm posting it
When you transfer a character to another server, any self-buffs you give yourself before the xfer will carry over with the same duration as before. The exploit is that when you get to the new realm, you can re-apply that buff, and it will stack with the previous one. As you can see in my image of me having 2 righteous furies.
Again, pretty useless, but it works.
The second way, which is awesome. Is you can apply a Greater pally blessing, and have another pally apply a lesser blessing, and they will stack. (Sadly this does not work with kings, but it should work with the others) It has been tested with sanctuary, and wisdom. (Double blessing of sanctuary ftw btw)
This is my first post, so go easy >.>