Depending on the post type, you have different options for responding to a post.

Reply

You can respond to questions by creating a reply. The moderator or user asking the question can mark the best reply.

Opinion

You can respond to ideas by creating an opinion. An opinion is intended to flesh out the idea or argue for or against the idea.

Comment

You can post comments for all post types. Comments are intended for questions and acknowledgements. You can also comment replies or opinions.

Voting

Clicking the up arrow icon upvotes a post. Clicking the down arrow icon downvotes a post. Each user can vote once. You cannot vote on your own posts. You can also vote on replies and opinions.