I tend to use floating or fullscreen for general browsing but often you have to type something while frequently referring back to something else - for example when programming I will be looking at the documentation. Or maybe debugging something on the command line while looking at your code to see what’s going on. In those circumstances tilling is perfect.
I use a lot of free and open source software, and some of the stuff I use a lot I support with donations. Python, Mozilla, FairEmail are examples of software I have donated to. Wikipedia also.