What are some of your must have browser extensions?

I recently made an effort to switch to Firefox, and now I'm looking for some good browser extensions to make my web browsing experience better. Here are the ones I currently use:

• HTTPS Everywhere
• Privacy Badger
• uBlock Origin
• Vimium

I just picked up a Nokia 3.1 for $120 in a bit of an emergency and I really like it. It's very light, Android One, very nice styling and again it's $120!

I was shocked by this experience at this price point. This thing is excellent for my use case, as a pre-paid EU phone as my lovely iPhone 6s Plus has only one Sim slot. Are there any other great budget phones out there?

I am considering starting a wiki project for an academic niche. I've already started prototyping using Gitit, I've written a bit easy pages to get a feel for the software and am planning to start working on the most important page that summarises the topic itself, which I believe will help guide me to which pages to create first.

Now, here I'm asking for general advice to a newcomer n00bie wiki admin like me: what to expect, what software, etc. Any advice welcome, but I'll list a few questions below:

• What wiki software? I am liking Gitit, it is nice and easy to set up, and comes with its own server which I run with a systemctl user unit in the background. I tried Oddmuse but couldn't get it to work with a simple server; Ikiwiki setup is too clumsy for my liking (it friggin put stuff on my $HOME by default!); I want to avoid PHP stuff in general; I want a simple wiki that serves simple HTML pages.

• How to defend against spam? My plan is to keep it invite-only for as long as I can. IDK how to do that with Gitit yet.

• How to serve it securely and for cheap, once I decide to publish? It probably won't ever grow beyond a few dozens of megabytes in file size.

• How do you go about promoting a wiki?

• What peripheral services (issue tracker, mailing list, IRC/Discord/etc channels) go well with a wiki?

• What tools are available to ensure content quality (no plagiarism, enforce conventions, monitor changes, ...)?

It's obviously unfamiliar, but I have to say that I don't think it's that much worse than the one we had before. It does obviously follow the trend of making everything look so much more mobile-y, but unlike Reddit they haven't really messed with the core display of content - in fact, I'd say the tweets themselves have gotten a bit larger. I've heard that the timeline gets reset to algorithmic sorting every 24h, which is an absolute no-go for me, but I haven't experienced that aspect myself.

Related: I've recently started using Tweetdeck and honestly have no idea why I should ever switch back to the main Twitter feed, redesign or not. Columns, lists, the customisation - it's pretty much everything I've ever wanted. Any tips or opinions on that?