Not an expert in this and someone can correct me or expand…
In the case of imgur or reddit, with embedded content like image previews or when following a link the destination site can know where you came from. Here a link that explains it better than I could.
In the case of Google, if you use chrome or search lemmy.world through Google and then click it from the search results, google knows
And if you don’t have any tracking protection via browser or extensions, there can be tracking using cookies for example.
Cloudflare is probably a false flag detected by this site
And in my particular case following your link it told me “No tracking detected on this site at present.” As seen in this image
What about trackers from other companies?
Here’s more of the page, that looks like it explains more about the “who” just by dividing it by categories (I found it useful, at least)
Not an expert in this and someone can correct me or expand…
In the case of imgur or reddit, with embedded content like image previews or when following a link the destination site can know where you came from. Here a link that explains it better than I could.
In the case of Google, if you use chrome or search lemmy.world through Google and then click it from the search results, google knows
And if you don’t have any tracking protection via browser or extensions, there can be tracking using cookies for example.
Cloudflare is probably a false flag detected by this site
And in my particular case following your link it told me “No tracking detected on this site at present.” As seen in this image