Electronic Combinatorics journal
E-print services for Differential Geometry (dg-ga@msri.org), Automorphic Forms (auto-fms@msri.org) and Complex Dynamics and Hyperbolic Geometry (cd-hg@msri.org) at MSRI
Computational geometry at www.gang.umass.edu
Computational geometry at www.geom.umn.edu
Computational geometry at forum.swarthmore,edu
Discrete mathematics at www.win.tue.nl
Some articles on: Do we create or discover mathematics?
Journal of Approximation Theory