I have a Twitter account I never use.
It seems really ironic to me that I am a member of MR but I toally boycott Facebook/Twitter/Google Plus.
If I had to give a reason it would be security, or lack thereof, that seems to be a major problem, or was a major problem, with these sites. That and I just do not think I am an interesting enough person to have people wanting to know what I am up to every minute of every day.
It's better to be an optimist who is sometimes wrong than a pessimist who is always right. Unknown