This is dating 👫or 💏 or 💑.
This is not 💻 to 💻.
I've been talking to a girl over Skype and recently we saw each other over Skype. Are we dating?
Well if you are going by most people's definition of dating, then no you're not. By your very brief description, you haven't really stated anything that would define you as being in an online romantic relationship with this girl. It honestly sounds like you two are just online friends. I mean there could obviously be more to it that you aren't telling but from what you've provided, it doesn't sound like you guys are.
However if this is something that you want to pursue, then you should probably talk to this girl about it. I know that people really dread the "defining the relationship" talk but it may help clear out some questions and uncertainties. Anyway good luck!
What's your definition of dating?
For some, it means that the person isn't talking to someone else and neither is the individual. For others, it means an exclusive relationship.
I would say no to the latter but have no idea about the former (since I have no inside knowledge about whether you two are seeing other people). I would say that you're simply "talking" for now and are interested in each other.