I love your analogy, but I think this is scary. For someone like me who is more comfortable lurking, tumblr has always flooded me with interesting things without needing too much interaction. Which of course has left me rather on the outskirts of everything.
So this is me forcing myself to interact ;) and hopefully build more relations to all the people I've followed and reblogged but haven't dared to say a word to. Otherwise I guess I would end up like I would on a real life campus, alone in a quiet corner and missing out on all the fun things.