A handful of unpleasant or uncomfortable encounters – some in the 'real world', some virtual – have put me off having too much to do with people, at least for the time being. I know I'm not particularly 'user-friendly' but I'm unfailingly restrained and polite when dealing with strangers. This posture is usually reciprocated. But there are those who take advantage of random encounters to patronise, insult or inflict puerile crudeness. They usually argue that my art or my written words are some kind of provocation. There's not much I can do about it except ignore them. On Twitter, I don't hesitate to block anyone who comes across as an arsehole. I'm a little easier here: I won't tolerate gratuitous insults (even between commenters) but strong criticism or dispute is likely to be published as long as it's not anonymous. Just don't expect me to respond.