I know it's not a perfect solution but considering the options, it's better to "sell" my attention to corporate ads in exchange of planting trees than nothing. Even then, I rarely see ads after whitelisting the site.
As far as my research goes, Ecosia seems quite reputable and I support their mission. If they're proven to be otherwise in the future, I won't have a problem to jump ship.
Thanks, very helpful! What about posts from instance B and comments in instance B post? I'm assuming instance B users can see both comments from instance A users and instance C users but for them (instance A and C users), they can only see their respective instance users' comments and instance B users' comments?
YSK: Ecosia is a search engine that plant trees with every search (www.ecosia.org)
YSK: You can see which instances your home instance is federated with and which they've defederated/blocked by going to "/instances"
For example, you can see this breakdown for Lemmy.world by going to https://lemmy.world/instances