He posted once:
http://mailman.lbo-talk.org/2006/2006-November/022491.html
[ archive plug:
http://search.lbo-talk.org/search/swish.cgi?query=swartz&metaname=author
]
No one responded to it, although it's an unusual sort of post for lbo-talk: one that makes a simple point well and has no dangling sharp edges that the usual suspects can pounce upon and drag the thread into the ditch with.
/jordan