  Magnetotransport theory of layered superconductors in the flux flow steady
state is revisited. Longstanding controversies concerning observed Hall sign
reversals are resolved. The conductivity separates into a Bardeen-Stephen
vortex core contribution, and a Hall conductivity due to moving vortex charge.
This charge, which is responsible for Hall anomaly, diverges logarithmically at
weak magnetic field. Its values can be extracted from magetoresistivity data by
extrapolation of vortex core Hall angle from the normal phase. Hall anomalies
in YBCO, BSCCO, and NCCO data are consistent with theoretical estimates based
on doping dependence of London penetration depths. In the appendices, we derive
the Streda formula for the hydrodynamical Hall conductivity, and refute
previously assumed relevance of Galilean symmetry to Hall anomalies.
