This is my thread version:
REPOSITORY OF USEFUL POSTS IN LG P500 FORUM
ROOT
SuperOneClick + instructions (Use only if you have 2.2/2.2.1 Firmware):
http://xdaforums.com/showthread.php?t=803682
z4root + instructions (Use only if you have 2.2/2.2.1 Firmware):
http://xdaforums.com/showthread.php?t=833953
GingerBreak + instructions (Use only if you have 2.2.2 Firmware):
http://xdaforums.com/showthread.php?t=1049944
CUSTOM RECOVERY
Amon_RA 2.2.1 recovery ported by Drellisdee:
http://xdaforums.com/showthread.php?t=844483
ClockworkMod 3.1.0.0 ported by mik_os :
http://xdaforums.com/showthread.php?t=1024838
ROMs
2.2:
KeruRom:
http://xdaforums.com/showthread.php?t=844355
(first ROM for LG P500!)
AmberHome:
http://xdaforums.com/showthread.php?t=853625
(second ROM and the first to be more elaborate and providing a satisfying stability and performance)
Megatron:
http://xdaforums.com/showthread.php?t=870640
(ROM tweaked for performance and first to include drellisdee's oc kernel)
Light:
http://xdaforums.com/showthread.php?t=891511
(heavily unbranded and minimalist yet having the usual tweaks)
Droideka:
http://xdaforums.com/showthread.php?t=900702
(first ROM by janitux, based on czech V10A with the usual tweaks and unbranding)
Ioshirom:
http://xdaforums.com/showthread.php?t=902662
(usual tweaks and settings)
DarkMoon:
http://xdaforums.com/showthread.php?t=904160
(usual tweaks and settings + RTL language support [arabic, hebrew, etc])
optimusXrom:
http://xdaforums.com/showthread.php?t=915269
(gingerbread-themed ROM, with oc kernel and usual tweaks)
devoid.:
http://xdaforums.com/showpost.php?p=10082306&postcount=4
(gingerbread-themed ROM which is _heavily_ unbranded and minimalist)
Ubuntdroid:
http://xdaforums.com/showthread.php?t=929600
(Optimus T, heavily dark-themed, oc kernel and usual tweaks)
openOptimus:
http://xdaforums.com/showthread.php?t=1033653
(cyan-themed ROM which uses a very useful script that customizes the entire system in one tap)
ROM QUY:
http://xdaforums.com/showthread.php?t=1120546
(ROM with usual tweaks + unbranding)
Optimum ROM:
http://xdaforums.com/showthread.php?t=1031393
(Light ROM with usual tweaks + unbranding)
ciaox's ThunderSense:
http://xdaforums.com/showthread.php?t=1115615
(Sense ROM ported on P500. It's stable,but very buggy)
scorpionking's Sense ROM port:
http://xdaforums.com/showthread.php?t=1112398
(Sense ROM ported on P500)
Optimus G:
http://xdaforums.com/showthread.php?t=965137
(ROM with usual tweaks + unbranding)
PhaZer (Optimus T):
http://xdaforums.com/showthread.php?t=1065629
(Optimus T ROM with usual tweaks)
Zero ROM (Optimus M):
http://xdaforums.com/showthread.php?t=1036257
(Optimus M ROM with usual tweaks)
2.2.1:
Prime:
http://xdaforums.com/showthread.php?t=881045
(first 2.2.1 ROM, based on portuguese V10N with the usual tweaks and unbranding)
JoeMOMRom:
http://xdaforums.com/showthread.php?t=900657
(Optimus T, usual tweaks and unbranding + oc kernel)
MetroHoney (Optimus M):
http://xdaforums.com/showthread.php?t=1042577
(Optimus M, usual tweaks and unbranding)
2.2.2:
Nessy:
http://xdaforums.com/showthread.php?t=985019
(ROM with usual tweaks,franco's Kernel,and long battery life)
LOL:
http://xdaforums.com/showthread.php?t=945218
(First ROM for LG P500 having a modified powermenu)
Light-v2 :
http://xdaforums.com/showthread.php?t=987948
(ROM with usual tweaks + unbranding)
Fusion ROM:
http://xdaforums.com/showthread.php?t=1113983
(ROM with usual tweaks + unbranding)
RomAnil:
http://xdaforums.com/showthread.php?t=1101323
(ROM with usual tweaks + unbranding)
IndianShyam:
http://xdaforums.com/showthread.php?t=1072153
(ROM with usual tweaks + unbranding)
Light 2.2.2 ROM :
http://xdaforums.com/showthread.php?t=1018839
(ROM with usual tweaks + unbranding)
2.3.3:
GingerLOL ROM :
http://xdaforums.com/showthread.php?t=1118685
(First P500 ROM based on leaked Gingerbread V20A)
Stock leaked LG Gingerbread 2.3.3 ROM :
http://xdaforums.com/showthread.php?t=1115487
(Can't flash it via recovery,need to flash it with LGDRM,otherwise - no GSM)
2.3.4:
andy572's Gingerbread ROM:
http://xdaforums.com/showthread.php?t=909242
mik_os' CyanogenMod 7 :
http://xdaforums.com/showthread.php?t=946354
dee000000's CyanogenMod 7 for Optimus-T P509 :
http://xdaforums.com/showthread.php?t=1072252
KERNELs
Drellisdee's kernel:
http://xdaforums.com/showthread.php?t=866774
(overclock, interactive governor, ext4, tun.ko, etc)
Mik_os' kernel:
http://xdaforums.com/showthread.php?t=929941
(based on drellisdee's kernel source + touchscreen cpu drain bug fix!)
franco.Kernel.v16 :
http://xdaforums.com/showthread.php?t=1049518
(the best kernel for LG P500. Provides more stability,performance,and it's compatible with lots of of roms)
DookMatt's Kernel :
http://xdaforums.com/showthread.php?t=1012414
(kernel with new OC,without interactive governor,and with LG touch fix)
DookMatt's BFS CM7 kernel:
http://xdaforums.com/showthread.php?t=1104280
(BFS scheduler for mik_os' CyanogenMod 7)
waleedq's Axis inversion fix kernel:
http://xdaforums.com/showpost.php?p=11166426&postcount=47
(Axis inversion workaround kernel,no OC)
Der_Caveman's kernel:
http://xdaforums.com/showpost.php?p=11221504&postcount=126
(Kernel with mik_os' lagfix + some other patches,with OC)
Sippolo's Kernel:
http://xdaforums.com/showpost.php?p=11270721&postcount=237
(Kernel with waleedq and Der_Caveman patches combined,with OC)
MODs
ungaze's Data2SD :
http://xdaforums.com/showthread.php?t=1042828
ilarrain's Everything2SD :
http://xdaforums.com/showthread.php?t=1050760
pomka78's Dalvik-cache2RAM :
http://xdaforums.com/showthread.php?t=1017321
AxesOfEvil's FUSE Filesystem on P500 :
http://xdaforums.com/showthread.php?p=14599341
AxesOfEvil's WiFi calling on Optimus One ROMs :
http://xdaforums.com/showthread.php?t=1116268
HOWTOs / TWEAKS / etc
Dictionary of android terms for newbies:
http://xdaforums.com/showthread.php?t=900905
Enabling JIT/Stagefright Player on the stock 2.2 ROM:
http://xdaforums.com/showthread.php?t=853418
Script for customizing heapsize/jit status etc.:
http://xdaforums.com/showthread.php?t=868008
Bricked phone recovery guidelines:
http://xdaforums.com/showthread.php?t=883314
Bricked phone recovery guidelines(Picture version):
http://xdaforums.com/showthread.php?t=1060121
LG P500 - Rooting, Installing Android SDK, Custom Recovery, Custom ROM:
http://xdaforums.com/showthread.php?t=1007244
Cook your custom rom for LG P500 :
http://xdaforums.com/showthread.php?t=901417
Tips for cooking your own ROM :
http://xdaforums.com/showthread.php?t=1049970
P500 Service manual:
http://xdaforums.com/showthread.php?t=895981
Safely install recoveries:
http://xdaforums.com/showthread.php?t=1065197