I think you may be crediting her with more intelligence than she has ever shown herself publicly to have. Putting yourself in a position where any sex tape you have of yourself is anything other than totally in your control - whether you are famous or not, but surely especially if you are - indicates a certain stupidity to me. And I would argue that she is any or much more than a Z list celebrity. The X-Factor gig has given her increased exposure but its hardly of the type to enhance her credentials.
Even so - this -
chrysostom wrote:The sex tape is the last resort of the Z list as it completely shames the individual, damages their reputation and only serves to thrust the celebrity into the public consciousness briefly.
-hasn't been borne out anyway - the exposure she has had has had a very positive and sympathetic net result. And given that (I believe) the reason for it was single sales, it only needs to be brief.
Its been a very successful campaign. Has done her far more good than harm, and all she has had to do was allow a short clip of video of her having sex to be publicly accessible for a very short time. What more could she ask?