a person who doesnt have much social life otherwise, but has lots of friends on his online messengers whom he/she tries to make contact with desperately when online.
from a chat window...
Dave1 : Dude... last night when i was tipsy i realised how cyber social i am in this foreign country
Dave2 : yea dude... this chick told me that u were sending nudges to her like crasy last night !
That loser that goes to parties, borrows someones laptop and goes on Facebook/Twitter.
M Darlington is exceptionally cyber social.