Here Are Some Great Links !

Hellforce - Some Friends Quake 2 Clan
Clan 9 - A VERY Good Quake Clan
Clan 9 - The Quake 2 Clan Of Nine

Other Quake Sites:
FragZone - The Absolute Greatest Swedish Quake And Quake 2 Page
QuakeWorld - Another Extreme Good Quake Site, New And Cool Updates Everyday