An even higher level of need, related to self-esteem and social recognition, is also leveraged by Twitter. Twitter allows normal people to feel like celebrities. At its worst, Twitter is an exercise in unconditional narcissism — the idea that others might actually care about the minutiae of our daily lives. I believe that this phenomena of micro-celebrity is driven by existential anxiety. I twitter, therefore I am. I matter.
“We are the mist narcissistic age ever,” agrees Dr David Lewis, a cognitive neuropsychologist and director of research based at the University of Sussex. “Using Twitter suggests a level of insecurity whereby, unless people recognize you, you cease to exist. It may stave off insecurity in the short term, but it won’t cure it.”
A few other problems I have with Twitter and social activity monitoring in general. First, it makes it much easier for stalkers to follow you. Second, there is a remarkable loss of focus and presence. — psychologytoday.com