So, Justin Timberlake was supposed to be at a party tomorrow night in San Francisco. The “special, private celebration” was in honor of the company Particle (which counts Timberlake as its lead investor), which recently launched its Robo.to service. Myself and fellow writers Jason Kincaid and Paul Carr were so excited that we’ve been gossiping about it all day in back-channel conversations. I believe Paul even bought a JT book for him to sign, earlier today.  But sadly, Justin, is bailing on us.

It appears that like most celebrities, Timberlake came down with a case of the “scheduling conflict,” and had to fly back to L.A. (or stay there, not sure if he left or not) to go be a movie star. But we’ll forgive him this time because of the reason for his conflict: He needed to be on the set of The Social Network, yes, the Facebook movie.

But Paul has a brilliant back-up plan. Why doesn’t Particle get Sean Parker, the Facebook founder that Timberlake is portraying in the movie, to be Justin’s stand-in? Perfect, right? Of course, Parker may be busy, seeing as he has three or so jobs at the moment, the most recent of which is being a member of Yammer’s board.

Timberlake needs to understand that the real way to get rich — and I’m talking real rich — is to be a Silicon Valley star, not a movie star portraying a Silicon Valley star. Next time, JT, next time.