BLOGROLL:
Conversable Economist (Timothy Taylor)
Dietz Vollrath (The Growth Economics Blog)
Economics for Teachers (Jennifer Imazeki)
Greg Mankiw
Project Syndicate
...more here.
ACADEMIC/RESEARCH:
Univ. of Kentucky Economics Ph.D. Program
NBER
SSRN - Economics Research Network
World Development Indicators (WDI)
Penn World Tables
VOX (Research/Policy Analysis from Economists)
Academic Sequitur
PEDAGOGY:
AEA's Resources for Economics Teachers
Best Practice for Diversifying Economic Quality
Retrieval Practice
Starting Point Economics Portal
The Learning Scientists