This is a toughy. I, personally, feel it's important to be upfront about my kiddo. Helps me weed out the people for which kiddos isn't their jam. However, over the past year, I have found it increasingly more frequent for women in my area (in fact, the norm now) to not put that they have kids on their profile, but then mention it when chatting or even as late at the first date. I don't have a problem with this per se, as long as they are open about it relatively early in the process. I also, personally, find single moms with two or less kids an extremely desirable trait. When I'm getting to know someone and they seem cool, then they mention that they have kids, it piques my interest even more. Personally, I don't think it's wrong to not state it on your profile, but be upfront about it preferably in the initial chatting stages or by a first date.