What is happening with the Ads? They seem to be provided in large part by Google (they have the AdChoices logo) and those ads which do not have the logo have the link going to googleads.g.doubleclick
Does having Google serve the ads, rather than Mumsnet's own adsystem mean that Mumsnet has less control over what adverts are shown, more control and less effort (always a good thing), or is something just going weird with the ad system and it's defaulting to displaying Google Ads?