First things first. Read the catfish thread:
http://christianchat.com/christian-singles-forum/85202-o-o-internet-catfishing.html
The Bible doesn't say a lot about dating and courtship. Dating especially is a completely foreign idea to Biblical cultures. But some good common sense ideas would be:
Decide beforehand how far of a distance is too long distance. This is an individual call, depends on how much you feel like you need to be physically together, how feasible and practical that is, and how much you are willing to invest in it (plane tickets to the other side of the world are expensive).
Be upfront about what you're looking for and what your boundaries are. This could backfire as some people might take your boundaries or standards as a challenge they want to conquer, but trying to please everyone out there only means you'll have to wade through a whole lot of people that you aren't interested in.
Safety first. First meetings should be in a public place with your own transportation. If you feel uneasy meeting this person, ask a friend to go with you and sit at the next table over so that you have some backup.
Be choosy. The goal of dating is to find someone you can ultimately marry. You aren't required to give everyone interested a chance just because they want one.
Involve family, friends, and community- Though difficult over the internet, a healthy relationship would be one where you both become part of each other's already existing lives not one where you both abandon your present activities to spend lots of time alone together. And family will tell the truth about you and see things you don't, and everyone feels more free to be themselves in a group of friends they are already a part of and accepted in.