If your audio is configured to use stereo normally, you may not be hearing everything you're meant to hear in Dark Souls! Check out this video for full detailed explanation:
http://www.youtube.com/watch?v=ku1ZBwB7Ghs

Some detailed technical explanations about how UPnP and GFWL works, and how to solve any connection issues you may have related to UPnP:
http://forums.steampowered.com/forums/showthread.php?t=2902926

This thread contains a ton of useful diagnostic and tweaking tools, utilities, and active mods currently ongoing for Dark Souls: Prepare to Die Edition:
http://forums.steampowered.com/forums/showthread.php?t=2900321

DSfix 0.5 is out http://blog.metaclassofnil.com/?p=127

version 0.4 is my waifu

If you have an ATI card and experience sluggish performance, read this thread:
http://forums.steampowered.com/forums/showthread.php?t=2902805

Summoning Failed? Can't host invaders? Forward your ports!

TCP Ports: 80, 443, 5223
UDP Ports: 3478, 3479, 3658

Source: http://forums.steampowered.com/forums/showthread.php?t=2904056
http://support.microsoft.com/kb/937424

https://live.xbox.com/en-US/Profile?gamertag=Crazy%20Half%20Jaw2
I made the account when I was a kid okay don't bash my name you silly boys

https://live.xbox.com/en-US/Profile?gamertag=Mionface
WELL! WHAT IS IT!

https://live.xbox.com/en-US/Profile?gamertag=Sir%20Porkchop
dark soul is my favorite character

https://live.xbox.com/en-US/Profile?gamertag=brynz0rz

https://live.xbox.com/en-US/Profile?gamertag=Preadolescance

https://live.xbox.com/en-US/Profile?gamertag=Qwertipman

http://live.xbox.com/en-US/Profile?gamertag=SuperInMyPants

Pretty girl by day, afro vampire by night

https://live.xbox.com/en-US/Profile?gamertag=Veriane

http://live.xbox.com/en-US/Profile?gamertag=ray%20juped

i am finally rid of that chinese hacker's xbox mii

please invade me nonstop

Post your GFWL profiles here for easy friend access:
https://live.xbox.com/en-US/Profile?gamertag=Jagobah

Hahaha "family fun"