  I present some results about transverse momentum dependent distribution and
fragmentation functions. Firstly I illustrate a simple model, with predictive
power about the energy behavior, for T-odd, chiral odd functions. Moreover I
propose a slight modification in extracting transversity from HERMES data, so
as to apply correctly factorization. Lastly I suggest a method for determining
the quark transverse polarization in an unpolarized or spinless hadron.
