Forum:Welcome tool and null edits

Is there a way of setting the welcome tool / bot so it dose not welcome what are effectively null edits i.eIPs have opened the editor and saved it and the only change is the 'wysiwyg' (not) visual editor adding or removing spaces or doing nothing at all. It then thanks them for there 'edits'.

Can it be set to only welcome people who have really edited a page (by a set amount). - BulldozerD11 00:12, January 23, 2010 (UTC)