Yes - anything that doesn't need to be accessing the internet. Plus Google things that phone home. It's fun to watch them get frustrated and light up red in the activity monitor as they desperately try to send back metrics.

I have blocked everything Adobe Lightroom and its little cloud friends try to do, except on install to validate key. And a bunch of other apps / Apple services. If it wasn't for Little Snitch I wouldn't feel at ease running Mac instead of Linux. For me MacOS is a decent compromise between privacy and convenience because of Little Snitch. (Except that I implicitly add to the problem by accepting Mac in my life, leading by example and all that. Still struggling with that. But I tell myself I have bigger fish to fry.)

I have used Little Snitch for quite a while, then switched to Hands Off because I liked its interface a bit better and the ability to set a rule that would clear at reboot was a win. I regularly block outgoing connections; tracking attempts by Google, Apple & Microsoft (no PowerPoint, you don't need to check in to Skype at each launch...), limiting a lot of apps to loopback connections rather than full outgoing connectivity, etc.

Another benefit is that once I get over the initial rule configuration hump (and it is a real PITA for the first week or two) what I end up seeing are the anomalies and so I can pay closer attention to what has changed or where something is trying to connect that I might want to think about.

People do it for pirated copies of Adobe software because of how much it phones home. Do a quick google search and you'll find many sn/crack/warez (do people still use that word?) instructions talk about editing hosts files or installing Little Snitch.

I do. I often don't like ms products sending crash information but need those updates. It's manual but something I prefer.

i block all desktop apps from accessing google analytics. Don't want my desktop activities to be tracked with google analytics.

The Photos app makes requests to some concerning endpoints that I wish they could add a way to disable those features, like "FaceRecognition" or the like. Which it is implied that the iPhone photos app probably does it too.

Not sure what data it uploads but there is no info surrounding this.

Yes, lots. It's amazing what makes (/tries to make) connections over the course of a day.

Yes. Applications only get access to the resources needed to do what I want them to. Sorry, nobody gets telemetry.

It is a bit of a pain the first couple times you run a new app, but settles down fairly quickly. OS X upgrades are far worse - Apple seems to build a dozen new weird little things that want to connect to god knows what every release, and the right answer there is, for instance, `sudo defaults write /System/Library/LaunchAgents/com.apple.gamed Disabled -bool true`

Aside from blocking unwanted telemetry, I have multiple profiles that I switch between depending on the network I'm connected to. If I'm tethered to my phone, I restrict almost all traffic unless it's something I'm using so I can conserve data. The profile assigned to my home network is a lot more open.

Absolutely. Every now and then I have to click a few buttons, but that's OK. I like knowing what installed programs are doing.

Yes, I do, why?

No, I use it for monitoring only.