Apologies, I am aware that 2 messages at least have come through recently advertising duct cleaning to members of this google group.
I have removed the author... they somehow joined the group without me knowing... I've tightened up group security settings so hopefully that is the end of it.
I've also set things up so that new messages have to pass through me before being posted to the group. My apologies, but I have no way of knowing if anyone else has joined to inundate us with spam, so this will give me a way of preventing it from reaching everyone.
Thanks for your patience everyone.
Colleen