tastes, hobbies, and so on.
When you create your profile, you can indicate whether you're a smoker, if you like dogs or cats, if you have kids, if you want to date someone who has kids, and so on. All this info will help you find the right people to talk to.
POF Free Online Dating has tens of millions of users worldwide, and although it isn't quite as direct as Tinder or Badoo, it's a better option for finding people with similar tastes and interests.