The editions, and how they differ
Everything here is drawn from one corpus - the same articles, the same clustering, the same counts. What differs between editions is which part of that corpus each one publishes, and how much corroboration a story needs before it appears at all.
That is why a story can lead one edition and be absent from another. Not a different judgement about it: a different threshold, or a subject outside that edition's region.
everytrace.eu
Publishes stories whose subject is European, and only once 2 independent sources have carried them. Read the everytrace.eu edition
everytrace.co - the edition you are reading
Publishes stories from anywhere, and only once 3 independent sources have carried them. This is the edition serving this page.
Which one a story belongs to
Story pages have one home, and every edition links to it rather than keeping its own copy. So a story you reach from either masthead is the same page, with the same counts and the same history - the editions differ in what they put in front of you, never in what a story says.
Why not one site
A single feed mixing worldwide and regional coverage at one threshold serves neither. The corroboration floor that makes a global front page worth reading removes most regional reporting, because a story covered properly in four European outlets never reaches the count a wire story reaches in forty.
How the counting works applies identically to every edition.