  Bilinear R-parity violation (BRpV) provides the simplest and most meaningful
way to include such effects into the Minimal Supersymmetrical Standard Model
(MSSM). It is defined by a quadratic superpotential term $\epsilon L H$ which
mixes lepton and Higgs superfields and mimics the effects of models with
spontaneous breaking. I review some of its main features and show how large
$\epsilon$ values can lead to a small neutrino mass radiatively, without any
fine-tuning. I discuss the effect of BRpV on gauge and Yukawa unification,
showing how bottom--tau unification can be achieved at any value of
$\tan\beta$. However, for very large m $\epsilon$ values the large $\tan\beta$
solution is ruled out.
