Yes it was that he was listing a part for sale ( not Modena diff as said) but the forum has a minimum post count unless permission is given by admin that is granted by the fact one or more knows them. Normally the more posts the longer people have known them,met them sold them parts etc.
This is why I always say to all those who just read posts. Join in even random banter anything then we recognise them should they need to buy or sell a part. When asking for help they will get more replies Of other forum members and it all helps with the community