Not all friendships/relationships on the net shouldnt be taken seriously. I have met quite a few people on the net first, then met them down the track for the first time. I even lived with one of them for 6 months. They cannot all be judged as one, they all have there own merits.
Even another I chatted to online for not even month and shared a hotel room with her after a gig. Became really cool friends.
Not all online friendships are people online with a second life. Not having a go or anything, but just stating they all have their on circumstances needing to be taken into consideration.