Buff Buddy replaces the default buff and debuff display in your UI with a much more customizable version.

Recent Changes:

Fixed a silly mistake in the code that prevented the scale from being saved when changing the buff/debuff frame scale.
Fixed an issue that prevented some "dummy" buffs/debuffs from hiding after locking the frames.
Changed the up and down buttons for the priority lists to properly move them up and down. Turns out I had them backwards somehow lol.

With Buff Buddy, you can:

Customize your buff and debuff displays separately.
Change the size of the icons.
Create a priority list to always show certain buffs first.
Change the vertical and horizontal spacing between each icon.
Change how many icons will show in each row.
Change the direction in which the rows of icons will grow.
Create as many profiles as you like so you can quickly switch between different set-ups.

Tips:

The Spell ID for any buff/debuff can be found on WowHeads website. Search the spell you want and you can find the Spell ID in your browsers address bar.
(eg: http://www.wowhead.com/spell=21562/power-word-fortitude; "spell=21562" <- - This is the Spell ID for Power Word Fortitude)

Enter spells in your priority list by using their Spell ID's instead of their names. Some spells have multiple versions with the same name, but have different Spell ID's.

Want to know a certain buff/debuffs Spell ID? If your character currently has the said buff/debuff, you can find the Spell ID in its tooltip by mousing over it.

Enjoy!

If you encounter any bugs or lua errors, feel free to post them so I can work on it when I get some spare time.