In the news this week it seems that Queen Elizabeth II like social and is reported to send e-mails. Whether that means she actually taps on the keys or whether her butler/servants do the deed is of course unknown. But it will be interesting to see whether this is a campaign to lift/maintain the royal house's media profile.
I had heard this a while back. It's interesting. I could see the queen actually doing this herself. She's always seemed a pretty savvy individual, if a bit pompous. ;)