Fairly frequent on-line shopper, and generally a frequent user of computers and the internet. Don't use social network sites much (but have accounts at few of them). Mixed feelings about review (including my own) - one bad review resulting from misfortune rather than mismanagement can do disproportionate damage. Equally, it is too easy for people to write 'ringers' (like a minister preparing a question for an MP to ask him/her - full of ringing endorsement and general toadying).