Hi again Anika, seriously, I do not mean to create any arguments or what so ever, there is never a good question or bad question, what you just said before makes people look stupid, and that's discouraging people to ask questions, yes, even "dumb" questions, it makes people nervous about asking questions "is this question too stupid to ask?" Not all people are good researchers like you, and not everyone has a lot of time to do research, so why not let those people ask the questions they want answered, if you think they are dumb questions, maybe just ignore them? I agree that mailing list is very busy, but if an stupid question gets answered, might saves someone a lot of time. just my 2cents. Regards James