My DD just started reception last year was warned about certain playground mums but ignored it however! There are three mums with younger children who seem to be glued together all the time before school, after school, parties they don't speak to anyone esle or make the effort. One if them I find particularly rude I have stood aside for her to pass and she hasn't acknowledged me just looked straight past me, they never smile say hello or intergrate. She ignored my DD chasing after and calling her son on the way home once too, if I hear someone calling my DD I make sure she at least acknowledges Them, considering my DD was running right beside her she couldn't miss her! I don't speak to every mum either but make an effort to smile and say hello to the ones I see regularly. I know not everyone will get on etc but considering our children are in the same class for the next however many years I find it strange you don't acknowledge people you see every day! It's my dds bday soon and I will be inviting whole class but these mums I don't feel I want too - but of course I will as it's not their children. so how you experienced mumsnetters battle through the minefield of playground politics!