Cosmic rays from dark matter annihilations

Time has come to probe for the presence of weakly-interacting massive particles in the Milky Way. These species may contribute a substantial fraction to the mass of our galaxy. They may dominate its gravity and dynamical balance on large scales. Their mutual annihilations would yield several indirect signatures that are potentially detectable on Earth as extra-components to the various cosmic radiations. I will review those indirect signatures and show that the situation has significantly evolved since the last 1997 TAUP Conference. In particular, neutralinos may have followed the collapse of the massive black hole that sits at the galactic center. If so, the resulting dark matter spike would be such a strong gamma-ray and neutrino source that the entire supersymmetric parameter space could be within reach of the near future instruments.