I appreciate GitHub & -Lab's feature for post reactions (so that dozens of "oh yes please fix this"-posts can collapse into "14👍 5 ❤️ "). But what do people commonly understand 👀 ("eyes") to mean when left on a comment?
@chrysn I think it's an equivalent of /sub, i.e. "I want to know what will happen here." without implying support or opposition to the proposed changes. Adding any reaction gets you notifications, so the semantics even work in practice.