Lighthearted!
My sin: I went to a Wetherspoons whilst on holiday in England. Not once, but twice
The food was great and I have 3 children with very restricted tastes in food. I'm the same so the menu suited us all. I feel bad about going there knowing the mumsnet consensus on the guy who runs Wetherspoons but it met our needs. I am a Catholic and feel like I need to say a few Hail Marys as a result.
What are your mumsnet sins?