Research wanted: age of spam gang URI domains

[Jeff Chan <je...@surbl.org>]

Does anyone have research or references for the age profiles of
domains appearing in the URIs of spam gang (i.e. Ralsky, Lindsay,
Richter, etc.) spams?  In other words, how old are the domains of
sites being spamvertised *by spam gangs*?  (By age I mean how
long ago they were (most recently) created.)

Jeff C.
--
"If it appears in hams, then don't list it."