I need a little bit information how the flag and arrow by the comments work? Is the arrow up like voting up, and the flag is a down vote. Orr is the flag a sign for moderators to come in?
The up arrow on a comment does exactly what it looks like, upvotes a comment. This does not affect reputation at all, it is just a sign of someone thinking a comment is useful, or maybe just entertaining.
The flag is to flag for moderator attention. Use this when a comment is offensive, tries to answer the question, is too chatty, or is not useful.