As with many academics my time is heavily oversubscribed, and I have to continually make choices between doing things which I already believe are important and I have therefore committed to, and remaining open to communication enough to allow others to persuade me that my priorities are wrong. This is not an easy to balance to maintain, and if you don't know me I may appear to be quite rude in my levels of responsiveness when in fact I am simply trying to not be rude to other people that you don't know who also have expectations of me.
I am good at reading email. I am bad at replying to email. So, if you want me to know something but don't need me to respond, email is the perfect medium.
I am only in my office intermittently, but you could try phoning me or visiting me there if you need me to respond. My number is +44(0)1179545144. As I write this I do not know where I will be when you are reading it, so you'll have to rely on allocentric directions. Try room 3.23 (office) or room 2.09a (lab offices) in building 25 (Merchant Venturers Building) by using these pages. Success rates are not guaranteed, nor are they good.
I am not on Facebook anymore. I'm also not on Twitter. I do have a relatively unused Google+ account, but am considering deleting that and don't post to it much. I am not technophobic, nor am I a recluse, but I am trying in my own way to avoid purely digital communication too much until we work out a practical way of restoring information's body. You can see my research group's latest efforts in that direction on the Bristol Interaction and Graphics web pages.