is a bounty manager such an important "thing" for an ICO?
Bounty managers is important thing for an ICO specially when you are starting one using a newbie account here in bitcointalk since it aids in gaining trust of others to promote your token crowdsale.
What are bonty managers actually do, what the founder and the project team can not reach? Do they have "magical" contacts with money, do they type advertisings faster than anybofy else, have they created the "right" community and what is on their communities so different to all numerios forums in internet?
They dont have magical contracts with money, they will just ease your jobs by managing the bounty campaign for you, always updating the bounty thread about the news, spreadsheet ans also rule changes that wants to be implemented by your team.
And in case a bounty manager really makes sense, how to distinguish the "good" one from the "ivel"?
To distinguish a good one from a bad, then just see here in bitcointalk who does their job right and updating their bounty campaign threads on time, just check other bounty campaign threads. The one I will recommend though is Sylon.