Well, I was in the shower thinking about stuff and I thought of another comeback for comments from people about how we parent DS.
For comments such as "don't you think it's time to cut his hair", "sleeping in your bed? That's a bad habit", etc, I could say "When your opinion about it matters, I'll let you know".
Then another: "If it concerned you, I would have consulted you about it". They can both be said nicely or snappily - a one-size-fits-all response!
When it's someone who genuinely wants to know why I do what I do, or don't, then I'll patiently explain myself, and they generally come round to my gentle methods! Otherwise, I just say something like "we all love co-sleeping", "I don't like to go bed alone, why should he", "why would I stop breastfeeding when he loves it so much".
The older he gets, though, the more I get comments about 'still BFing', co-sleeping, leaving his hair long, not 'conventionally' disciplining him, not having a strict early bedtime yaddiyaddah...
What do you do or not do with your child that has attracted comment and 'conventional wisdom' and how have you responded (or wanted to respond, in hindsight), depending on how civil or narky you felt they deserved to be dealt with? After all, us gentler parenters are raising anarchistic ferals and we need to stick together for when our children turn against us!