Netscape 7.2 was an excellent choice as a browser, around the time of it's release in 2004, but since
the 7.x series has now been discontinued by Netscape/AOL, it contains some security vulnerabilities
that have since been patched in subsequent releases of the Mozilla App-Suite and Mozilla Firefox.
The Mozilla Foundation have discontinued full development of the Mozilla App-Suite, and placed it in
"maintenance mode". This means that it's now frozen at v1.7.xx, it won't receive any new features.
New updates of the Mozilla App-Suite will be released to include bugfixes and security patches.
SeaMonkey is a community led project, continuing development of the Mozilla App-Suite with new
features and improved functionality, but independently of the Mozilla Foundation. Mozilla.org is
providing the SeaMonkey Project with webspace for it's official website, and server space
for users to get the latest (or recent) SeaMonkey builds and releases.
Seamonkey 1.0, (which would've become Mozilla App-Suite 1.8 if the original app-suite hadn't been
discontinued by Mozilla) is currently in beta. Despite the fact that it's still considered beta quality,
it is very stable, and almost good enough to be used as your primary browser.
I say "almost" only because there are still a few bugs, and some extensions made for the original
app-suite have not yet been updated to be compatible with SeaMonkey. But if you don't mind a
few relatively minor bugs, and you're not particularly bothered about browser extensions,
then SeaMonkey is good enough for your everyday use now.
Otherwise, I would recommend upgrading from Netscape 7.2, to Mozilla App-Suite 1.7.12, which
is what I currently use as my main browser. It's rock solid stable, very reliable, and there have
been no critical security vulnerabilities found in it's codebase.
Alternatively, you might like to consider the standalone Mozilla apps, Firefox and Thunderbird.
Firefox is a standalone web browser, while Thunderbird is a standalone e-mail/news client.
Links:
Mozilla Application Suite
Firefox and ThunderbirdUserAgent: Mozilla/5.0 (Windows; U; Windows NT 5.2; en-US; rv:1.7.12) Gecko/20050915
SeaMonkey = Swiss Army Knife: It's versatile, reliable, and contains useful tools.
Windows Internet Explorer = Old Swiss Cheese: Full of holes, and it stinks!