A few weeks ago, we announced
that the social news functionality was being removed from the Netscape Navigator Web browser in parallel with Netscape.com's transition to Propeller.com; at that same time, we promised that we'd release these features as standalone browser extensions.
We're making true on that commitment; the following social news features that had been standard components of early betas of Netscape Navigator 9 have now been reborn as browser extensions. These extensions are compatible with both Firefox 2 and Navigator 9:
The News and Tracker extensions are still available only in the Mozilla Addons sandbox; read this
for more information about the sandbox.