Yahoo did not quite manage to prevent someone getting in and sending a
couple of spam messages. I have deleted the messages and expunged the
offending user.

Also in future no-one can send/post messages without approval nor can
anyone join without approval. That should keep the nasties out.

If you do see any other undesirable activity please let me know and I
will try to resolve it.

And keep up the good work in sharing the community knowledge !

Best regards
Michael Salmony