lol ben
good point
still i think Parrot or Omega would also fit in such a list

Honorable mentions (IMO):

HUNG
Inq
Parrot
Sheep
BtC
T

oh yeah Sheep
forgot that
and maybe DavidFee is right and Raid also deserves to be on the list

New clans that will be added:
Hung
Parrot
Raid
btc
T
Sheep
cnbl
mad
inq
incognito
42.

Incognito is completely unknown by almost everyone. Oh, the irony.
Cnbl is dead. 42 is the same as incognito. Raid shouldn't be on there.
Mad is just devs. Sheep is mainly admins and IRCfags.
Only the old clans with really good players should be on there.

Alpha (fairly new, but lots of old members)
Bncy
Rawr
Urban
Inq
DAT
Parrot
RelaxAll

Those are the really good ones.

Do some research.
First thread in Urban.
First thread in Torigod.
That's about a year and a half difference.
Pretty sure Urban isn't one of the oldest clans.

spirit is absent from the list, therefore it's positively invalid.

You obviously researched poorly, we age right up there with bncy, and I believe it's either spirit, bncy, or Torigod that holds the title of oldest clan still alive.

Yeah, how are you not going to put the first ever Clan League champs as not in the top 10?

Warcry:
Alpha has been a clan since before I joined. They only had 3 members(Odlov, StabberZ, and KamiKo) at the time and I beleive there was a minimum of 5 members to make a clan official.

Way more sheep.

fixing and also adding spirit
I had forgot completly about spirit.