Hi David,
I'm curious what you are taking issue with? The message you are responding to is about a community clean up day for Mosswood Park that is sponsored by Mosswood RAC and the City of Oakland. That seems pretty in-line with the intention of this Google Group.
Typically the messages on the Mosswood Park RAC google group are very light. There have been a few occasions that someone missuses the group - such as for marketing. I usually send them a note that their message is inappropriate. If there is a persistent problem I can block someone from the group.
Are you referring to anything in particular?
Thanks
-brian