I guess you could change your facebook profile photo to be Mark's face.
To your question it comes down to whether or not you feel like Facebook improves our quality of life, and whether or not its effects are not already maximized. If you answer yes to both those questions, having Facebook more deeply integrated into your phone might help to maximize the benefits.
Also, if you spend 90% of your time on your phone on Facebook (I don't but I'm sure most geeks are not an accurate representation of the normal user) then you might prefer to have a deeply integrated Facebook phone with access to other apps/services on top of that.
To your question it comes down to whether or not you feel like Facebook improves our quality of life, and whether or not its effects are not already maximized. If you answer yes to both those questions, having Facebook more deeply integrated into your phone might help to maximize the benefits.
Also, if you spend 90% of your time on your phone on Facebook (I don't but I'm sure most geeks are not an accurate representation of the normal user) then you might prefer to have a deeply integrated Facebook phone with access to other apps/services on top of that.