Penn Web-Mail: https://webmail.sas.upenn.edu/

Penn's E-Journals

Quantitative Economics (A New Journal of the Econometric Society) - Co-Editor

Economics Research Network: http://www.ssrn.com/ern/index.html

Research Papers in Economics: http://www.repec.org/

American Economic Association: http://www.vanderbilt.edu/AEA/

Centre for Economic Policy Research: http://www.cepr.org/

DSGE-Network: http://www.dsge.net/

Econometric Society: http://www.econometricsociety.org/

European Central Bank: http://www.ecb.int/

Federal Reserve System: http://www.federalreserve.gov/otherfrb.htm

International Society for Bayesian Analysis: http://www.bayesian.org/

National Bureau of Economic Research: http://www.nber.org/  

Society for Economic Dynamics: http://www.economicdynamics.org/

Google: http://www.google.com/

Resources for Economists: http://rfe.org/