I'd like to know about folders you use. Uni-coded? Strategy-based? Random soup letter because you only fight agaisnt viruses? Show it anyway.

http://www.youtube.com/watch?v=LltQwOOT_mY
^example of my folder in action.

Here's a folder I made in BN2:

MegaMan:

HP: 490/490 (Because of HubStyle)
Style: HubStyle

ATK: 10
SPD: 1
CHG: 5

FOLDER - Oh Snap! Folder

47MB

LilBomb O
LilBomb O
CrossBomb O
CrossBomb O
BigBomb O
BigBomb O
MagBomb2 *
Guardian O
FstGauge * - Reg. Chip
FullCust *
FullCust *
FullCust *
Invis3 *
Invis3 *
Invis3 *
Invis3 *
Invis3 *
LifeAura1 O 
Atk+20 *
Atk+20 *
Atk+20 *
Atk+20 *
Atk+20 *
Atk+30 *
Navi+40 *
BassV3 X
BassV3 X
BassV3 X
BassV3 X
BassV3 X

Folder Strategy:

Basically, the MAIN killling strategy is to get BassV3 with all the powerups.

BassV3 + Navi40 + Atk30 + Atk20 + Atk20 = 70+40+30+20+20 = 180DMG per hit, which would take even BassDelux's aura in one shot, and kill him with the rest. If this whole thing comes up in the first custom I can kill navis within less than a second, depending on my luck with the chip.

Next, we have 2 UltraBomb PAs, which are good for navis like SnakeMan and GateMan, and since I have two of them, it makes it a total of 800DMG, and since Bass can also used the way bombs are... you get the point.
Then, I have chips like Invis, Guardian, CrsShields and Lifeaura, which are purely for protection.
MagBomb2 is used to keep enemies still while I use UltraBombs (or other bombs) on them.
Full customs are there so I can take chips away from my custom.
If I use FullCust as my primary chips, I can ditch away 4 chips by selecting them after FullCust, and when the turn starts, going directly to the custom window without using the other 4 chips.