I can't find the debian binaries for the latest releases anymore...
So wat's the best way to install otter on Linux now?
Best is a rather personal matter, but for Debian and derivatives I'd say the easiest method is to use the Ubuntu PPA.
If you don't want to build the package yourself you could grab the Ubuntu 14.04 or 14.10 (https://launchpad.net/~otter-browser) package. They work just fine. You have to click "view package details" to access the download links, or you could just add the PPA to Debian using e.g. sudo add-apt-repository 'deb http://ppa.launchpad.net/otter-browser/daily/ubuntu (http://ppa.launchpad.net/otter-browser/daily/ubuntu) utopic main' (replace daily with weekly or release depending on whichever one you want).
Since 16.04 is named xenial that means you'd have something like
sudo add-apt-repository 'deb http://ppa.launchpad.net/otter-browser/weekly/ubuntu (http://ppa.launchpad.net/otter-browser/weekly/ubuntu) xenial main' instead.
It's what I use on Debian/Stretch (testing). :P
DEB packages were discontinued, and now finally replaced by AppImage (containing fresh build of revived QtWebKit).
Note that it requires GStreamer 1.x present in the system (some fresh version).
A --install/uninstall option on the AppImage could be a pretty cool thing to add, cf. https://github.com/shoogle/MuseScore/blob/8deb2d48e09db265ddc86f022a00710a622696ec/build/Linux%2BBSD/portable/portable-utils.in#L73-L224
@Frenzie, sure, but looking at how long it took me to produce first AppImage... ;-)
Feel free to experiment with it, I think that some helper script or tool was mentioned in original ticket.