Sometimes when I access mumsnet from my dropdown list having been on another website, it opens the page (e.g. the main AIBU page) but then immediately bounces me off to another website. The website I get sent to isn't a spammy one (this morning, it was a Tesco site) so it is the type of link you might find on the side of Mumsnet, so I assumed that perhaps I had clicked something. But it's now happened on about 5 occasions so I'm fairly sure it isn't that, and the weird thing is, when I click the back button on my browser, it takes me back to whatever website I was on before loading Mumsnet.