WWW Virtual Library: Statistics
http://www.stat.ufl.edu/vlib/statistics.html
Portal site with links arranged geographically and by type. Scroll down nearly to the bottom for links to statistical journals, mailing lists, archives, and newsgroups.

American Mathematical Society
http://www.ams.org
Access to much of this site requires a subscription, but check out the links to "Books Online" under "Research Tools" and the searchable abstracts of journal articles (click "Journals" at the top of the page; the search field will be at the top right on the following page).

University of Tennessee Math Archives
http://archives.math.utk.edu
Includes links to mathematics Web sites and a searchable database organized by subject.