Well this depends, I met my husband through an online video game. We were friends for almost six-years before meeting in person and following through with a relationship. We already knew a lot about one another because we spent A LOT of time speaking to one another. He didn't have a lot else to do while stationed in South Korea, our friendship was very strong and we spoke a lot up until the point he got deployed and kind of disappeared off the map. But, he returned and we hit it off again like we never missed a beat.
He is my best friend, and to be honest one of our strongest bonds is gaming. We may not play the same games as of current (we met through World of Warcraft, and we are both on hiatus as of currently) but nonetheless it is something we can bond over. We have gotten our daughter into gaming as well, and it is something we can do as a family. Do I think just anyone should hop into a relationship before meeting someone in person at least once? Not particularly. However, I can't hate on video game formed relationships.
Having known him via a video game first, it allowed me to get to know HIM without all the distractions of physical appearance (I added him on FB about a year or two after talking to him) and because of it we became really, really good friends first and foremost. Though, I guess in the end it may not count because we never really dated over the video game itself, we didn't actually go into the 'relationship' status until we met... but regardless, I did meet him and maintain a long-term friendship with him via a game 