Tyler writes in an intimate, semi-autobiographical style, focussing on themes of female submission, spanking, bondage, bi-sexuality and group sex. In August 2006, Tyler began blogging intensely about a former BDSM relationship, described by The Guardian as "a sulphurous personal memoir of past sexual activities which put Belle de Jour's timid exploits in the shade." Initially intending to write confessionally each day for a month, Tyler continued with her story for 16 months, gaining a broad and loyal daily readership.