Social Medias

A long time ago I was a member of MySpace. I closed my account months ago and frankly I don’t miss it one bit. I don’t believe it picked up any new readers because of my sight…but I could be wrong.
I have so many things that are a time suck to me that take time away from writing and editing I have to ask – are the medias like FaceBook, MySpace and Twitter worth the time?
I attended a few workshops over the last year that claimed that twitter was a must have for writers. I came home excited and ready to sign up. I didn’t. why? Because to me it seems like a waste of precious time.
I have friends and family who spend all day long on Face Book. They all beg me to get an account. I’ve fought it for over a year now. At first it was because I was being stubborn because they wouldn’t stop harassing me, now it’s just one of those things I’m not feeling.
Give me your take. Do you find any of these social medias a benefit to your career as a writer or are they just what I perceive them to be – a time suck?