It's astonishing how a writer as limited as Welsh can write a book that gets under your skin and infects your use of language for days to come. His previous offering, Glue, made my friends and I talk like "schemies" from the new slums of Edinburgh for months to come. Unfortunately, Welsh always lets the side down a bit with the odd bit of stilted dialogue, or pointless analysis of his own sexual (and political) obsessions. Porno is another example of his dual tendency: compulsion and drivel. Like most of his other books, Porno has moments of boredom and rubbish, most notably seen in the subplot of Leith schemies making a porno film. (Is this a nod to Jane Austen's Mansfield Park?)Welsh's disturbing fixation with hardcore porn - seen also in previous works like Filth and, to a lesser extent, Ecstasy - nearly ruins the book; however, this semi-sequel to Trainspotting manages to compel the reader to devour the book in one or two sittings. I won't discuss the plot any further, as I do not want to ruin the razor edge suspense that will drive you inexorably onwards through the novel. However, it obviously follows up on the aftermath of the scam which formed the climax of Trainspotting. If you're a newcomer to Welsh's work, start with his earlier books. If ambivalent, Glue and The Acid House are probably the only Welsh books you should bother with. But if you can't get enough of the sociological ground-level analysis of Thatcher's Scottish orphans that Welsh provides, than you're probably reading this book already. Enjoy, but be prepared for your eyes to glaze over at Welsh's neuroses.