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http://fun-arena.hlstatsx.com/players/insmod/?type=cityinfo&valuecity=
http://fun-arena.hlstatsx.com/players/insmod/?type=countryinfo&valuecountry=

http://xxlgamers.gameme.com/players/insmod/?type=cityinfo&valuecity=
http://xxlgamers.gameme.com/players/insmod/?type=countryinfo&valuecountry=

Community Data

Player Profile

Format: http://steamcommunity.com/profiles/<SteamID>/?xml=1
Example: http://steamcommunity.com/profiles/76561197968575517/?xml=1

Format: http://steamcommunity.com/id/<CustomURL>/?xml=1
Example: http://steamcommunity.com/id/ChetFaliszek/?xml=1

Groups

Format: http://steamcommunity.com/gid/<GroupID>/memberslistxml/?xml=1
Example: http://steamcommunity.com/gid/103582791429521412/memberslistxml/?xml=1

Format: http://steamcommunity.com/groups/<GroupName>/memberslistxml/?xml=1
Example: http://steamcommunity.com/groups/Valve/memberslistxml/?xml=1

Related:
http://insurgencymod.blogspot.com/2010/04/steamids-and-steam-community-profiles.html

IMSID6DBB6E5FD33A0CDBE8851C2356AFECBD0CFB6787