Online academic journals and databases

• JSTOR has a number of stat and ecology journals (as well as other fields): Annals of Statistics, JASA, Stat. Science, Ecology/Apps/Monographs. Unfortunately, it's IP-authenticated, so while generally available to academic users, it's not for others, though it might be available through your public library.
• Science Citation Index allows you to find articles that have referenced another article, i.e., searching forward in time, which can be extremely useful. It is also a useful general index of scientific articles (the most detailed general index of multiple disciplines that I have encountered. Use is limited by IP of host.
• Searchlight supposedly searches gov docs as well