The Slackware Package Browser, among other new features, has been
moved on http://packages.slackware.it --
you may want to bookmark the new address if you are a frequent PB user :-)
Beside the package browser we have more changes undergoing; you are
encouraged to visit dev.slackware.it to see what's going on.
That site is basically an incomplete (at the moment ;-) copy of slackware.com
with some new feature and a new interface (xhml 1.1 and intensive use of div's).
Some of the feature include RSS feeds for the Slackware ChangeLogs and Security Advisories,
ChangeLog viewer with clickable package URLs, and so on.