This document summarizes a presentation about using semantic annotation to improve open science practices in digital libraries. It describes a project that published transcriptions and metadata from historical correspondence online using open standards to make the data more accessible and interoperable. The project aims to enrich scientific knowledge by allowing researchers to analyze relationships in the data and compare discussions over time. The presenter argues that open science should become an imperative for scientists by changing incentives to reward contributions like data sharing that build on previous findings. Adopting new collaborative online practices could help manage knowledge as a commons and change the "traffic direction" of science.