If you are going to announce it then announce it. Some people only tune in every once in a while and then we have a mad rush of people going "where are we meeting" "is that a good time" "which northhampton" "blah blah blah blah" I think more then one days notice is appropriate. Sometimes people internet goes out and then I/they would be screwed. My neighbor cut thru everones telephone lines and cable yesterday (I only lost my phone lines). I was without phone for 24hours and some people were without cable/internet for just as long. If it had happened today I am sure I would not have gotten any messages. That is why I posted.