Safety Pilot Qualification?

I'm sure this has be hashed over many times, but I can't find it now. In
the current issue of "IFR" (December, 2003), an editorial answer to a
reader's question contained the following - (referring to a safety pilot
requirements):

".... if you use a safety pilot and write that safety pilot's name in your
logbook, we'd highly suggest that you treat that safety pilot as a required
crewmember........... If the airplane is high performance, complex, or
tailwheel, that safety-pilot-required-crewmember should have those
additional endorsements, too."

For many years I have been under the impression that a safety pilot must
possess at least a private pilot certificate with category and class ratings
appropriate to the aircraft being flown. In my case, (182-RG), I don't
think that a safety pilot has to have any of the above additional
endorsements. Has something changed, or have I just been wrong all these
years?

Thanks in advance!