Noncommutative Geometry and Algebra - http://www.math.washington.edu/~smith/Research/research.html People, groups and publications. Compiled by Paul Smith, University of Washington.
The Brill-Noether Project - http://www.liv.ac.uk/~newstead/bnt.html Aims to answer the basic questions this theory B(n,d,k) for vector bundles on algebraic curves. Welcomes contributions.
The Hodge Conjecture - http://www.claymath.org/prizeproblems/hodge.htm A description of the conjecture by Deligne (PDF) and details of the prize offered for its resolution.