Well, I'm a single father with 100% responsibility for my son, so also I have the issue of dating and introducing women to my son.
I have a rule. I don't bring women home. Period. It's not fair for me to bring home a parade of women for my child to get attached to only for me to rip them away from him over and over and over.
However, I do meet women everywhere. In the library. At the park. At the local coffee shop. Please don't be afraid to approach a man you might be interested in - it's a real thrill to be asked out by a woman! I love the "coffee date" myself. If my son has a play group, I can meet someone for a short coffee and decide whether or not this person is worth spending more time and energy on. Sure, I've had my share of easy sex, but not what I'm a dad I'm far more particular about who I want to spend my time away from my kid with. If we do decide to go out, I'll have a sitter/nanny watch my son and we can go out. But we can go to her house if we both want something more recreational - or a hotel - but I'm not bringing her home. Not until I know she's someone I want to have around my son, and that she's someone who won't be in and out of his life. And remember, if you're not ready to leave your kid overnight, you're not ready. Most people would understand that and if they don't they're not someone you want to be dating anyway.