I am someone who rarely (if ever) posts to this list. What Ted and Thomas have said is reasonable.
It's not a major problem to anyone here to filter an email if they don't want to see off topic messages. Just make it clear it's off topic. I suggest the [OT] tag is appropriate. It's better than ignoring it and just posting any old topic. It's also better than having a moderated list. I dislike filtering on "OT:" because I think some real messages might get filtered. -Chris -- "They that can give up essential liberty to obtain a little temporary safety deserve neither liberty nor safety." - Benjamin Franklin, Historical Review of Pennsylvania, 1759