The following words are designed to be triggers for Post Comments, Live Comments, and Story Replies.
They have been tested across thousands of posts, with over 50 million user opt-ins. These words will get you the most opt-ins, because they follow this SWEET framework:
S - Seven letters max, ideally
W - Word, not phrase
E - Easy to spell
E - Exact word related to your business
T - To make it speedy for users, avoid special symbols and emojis