Pete,
I have read and participate in r.a.s for the last few years. The
newsgroup is not 'restricted' to primary students. There are many
instrument/comercial etc. students there as well and IMHO, the
learnings are never stopped for all pilots.

The website link which Jim provided has section on ground icing as
well. The information benefits all pilots and not just IFR rated
pilots.

Again, IMHO, there are no such things as too much information when
it comes to safety issues. Weather is totally unpredictable, VFR
pilots can encounter icing unintentionally. I had posted the account
of my first encounter with freezing rain about this time last year (not
in weather forecast, we were not in the cloud). What happened to us
could have happened to many pilots including primary students on a
solo VFR flight.

Any perceived problem with cross postings of on-topic subject is
quite insignificant in comparison to the numerous off topic, thread
hijacking branching out to politic and religious discussions seen at
rec.avatiation newgroups!

Hai Longworth