While I understand why everyone is making a huge deal about his bizarre fetlife MO and how that may perhaps imply motive and/or intent, we should keep in mind that it is a fantasy site and that any innuendo and/or allegations stemming from that can be twisted and contorted by any good defense attorney. For example, it could be easily argued that he was targeted because of his "fetish". In that same vein, the taped "confession" could be argued similarly - a kid with a fetish and a vivid imagination just spinning a local news story to make him look "cool" or whatever. Could even be argued that it was a "hypothetical". The ONLY physical evidence thus far that they seem to have tying the perp directly to Yingying is his car, and if he maintains the story that he picked her up and dropped her off, it isn't as open and shut as we hope. Particularly if they find no physical evidence of her being at his home, or - against her will - in his car (blood, signs of an assault, etc).
I hope they find her body. That should help tremendously with their case against him.
JMO.