The Social Network Movies Advertising on Facebook with Myspace?

The Social Network movie opens today (Yes: I loved it) and advertisements are appearing across the web. That's not 'newsworthy'... but:

- The ad units themselves look a great deal like Facebook (again: no shock) - And the main ad unit has an "Add to Friends" link (see below):

- when clicked, you arrive at The Social Network's website - ... which strangely lists MySpace, Twitter and Facebook sharing buttons in that order (shouldn't it be Facebook first? perhaps only?)

- If you click the Facebook share button, a lightbox appears to post a MySpace profile announcement for the movie on your Facebook page. And what is with the suggested creative?

Very bizarre... and for a movie dedicated entirely to Facebook - and marketing to Facebook users / fans - you would think this would be better thought through.