  We explore the possibility that the rest frames of CMB, matter and dark
energy differ one from another, i.e. they do not converge on very large scales.
In such a case, the usual interpretation of the CMB dipole as being due to the
relative motion of the observer with respect to the CMB rest frame is not
appropriate. Instead, we find that the measured dipole is due to the observer
motion relative to the cosmic center of mass rest frame. This means, in
particular, that even an observer at rest with respect to the CMB radiation
could measure a non-vanishing dipole anisotropy, provided dark energy is moving
with respect to the CMB. We also consider the consequences of moving dark
energy for the determination of cosmic bulk flows.
