I kind of agree for the "drag to reorder" in the stocks apps, but this doesn't work for Facebook and Bootstrap.
For Facebook, it doesn't work because the grip is not the in the correct direction. The grip is a skeuomorphism for real grips that go perpendicular to the movement you want to stop. Here you move your finger horizontally and the lines are horizontal too.
For Bootstrap, it doesn't work either because the button stays where it is, whereas the grip should follow your finger or mouse. (see for example, the grip on the notification center on iOS: http://iphoneism.com/wp-content/uploads/2011/06/notification...)
That being said, I think in both Bootstrap and Facebook, the icon represents a list: the list of things in the menu and the list of settings (or views) in Facebook. Even in the iOS stock app, I think it's probably a list too. It can be interpreted as a grip, but only in the Android version do the graphics imply it more strongly.
For Facebook, it doesn't work because the grip is not the in the correct direction. The grip is a skeuomorphism for real grips that go perpendicular to the movement you want to stop. Here you move your finger horizontally and the lines are horizontal too.
For Bootstrap, it doesn't work either because the button stays where it is, whereas the grip should follow your finger or mouse. (see for example, the grip on the notification center on iOS: http://iphoneism.com/wp-content/uploads/2011/06/notification...)
That being said, I think in both Bootstrap and Facebook, the icon represents a list: the list of things in the menu and the list of settings (or views) in Facebook. Even in the iOS stock app, I think it's probably a list too. It can be interpreted as a grip, but only in the Android version do the graphics imply it more strongly.