Most platforms give you a dozen emoji and let chaos sort itself out. Forums work better with a small alphabet:
— Spark (hollow square) — "this resonated." — Read (eye) — "I read this and acknowledge it." — Ink (filled square) — "mark — I want to find this again."
Each reader picks at most one per post. Try clicking one of the three chips above this paragraph — your choice replaces any prior reaction, and the count next to it updates in real time.