The designers of this particular IMVU ad were obviously going for a kind of softcore "in the throes of both agony and ecstasy" pose from the female figure here. It's a shame that instead, she looks as dead-eyed and lifeless as a fresh corpse, giving the whole thing an unsettling necrophiliac aura. Not to mention ties with the grotesque misogyny of the "ooh, aren't recently-murdered women hot" tradition.
Still, I can't fault the advertisers for their choice of location for this vamp-themed ad, even as I'm damning the execution (no pun intended).
Update: Just so we're clear, I'm not criticising erotic vampire imagery as a whole. I just think that this is an astonishingly poor example of it.