That was towards me..... a loud megaphone... wasn't directed to him.
That's the thing: the megaphone icon is an inappropriate rating on someone's post, and inappropriates, in particular, are used for moderation purposes; if there's three inappropriate ratings on that post, the post will likely be taken down in due time because it likely breaks server rules. Likes, cheers (the beer icon), high-fives (the high-five icon), thread-winners (the trophy icon) are all positive ratings; shock (the shocked face icon) and ouch (the red-cross icon) are neutral, but can be positive or negative, depending on the post. Things like chill (the snowflake icon) and inappropriate are negative ratings. The not-so-sure (the questioning face icon) also trends negative but also could be used if you simply disagree with a post.
Just a bit of friendly advice.