The NEFORUM extension collects no data. It communicates only with the NEFORUM desktop app on the same computer (http://127.0.0.1), from which it receives the post you chose to publish and to which it reports whether that post was filled in and posted. It stores one pairing token in the browser's extension storage. It sends nothing to NEFORUM's developers or any third party, uses no analytics, and loads no remote code.