http://www.theregister.co.uk/2014/04/18/netcraft_
heartbleed_browser_extension/"If the Netcraft extension determines that a site was vulnerable before
news of Heartbleed broke, it checks the date on the site's SSL certificate
to make sure it has been recently replaced. If it hasn't, the extension
displays an alert.......Netcraft's updated browser extension is available as a free download for
Firefox 1.0 and later; Chrome 26 and later on Windows, OS X, and Linux; and
for Opera 15 and later on OS X and Windows. Versions for other browsers
aren't available, unfortunately, which means users of Internet Explorer and
Safari are left in the dark."
From what I can see, Paul, the Netcraft Toolbar gives libreoffice.org a
clean bill of health when checked with both FF and Chrome on my main
machine running 64-bit Linux Mint 16. The conclusion I draw is that that
website is safe to use, at least as regards Heartbleed....
Henri