Joe; you have made several of the points I was about to make. When I first used mudcat, I didn't realise how the system worked, so failed to acknowledge responses, or titled my threads incorrectly. Sometimes I was put off by angry comments about 'guests', but thanks to other, more helpful comments, particularly by Malcolm douglas, I picked up better 'etiquette', and hope I've been able to make a positive contribution.Bear with us 'newbies'; everything's easy when you know how!