For Newbie, they do not have too much experience in this market. So they should keep track of the reputation of the bounty managers. Stay tuned and participate in their projects because the chances of success will be higher and they will not be wasting too much time.
The reputation of the manager can't be a good factor to determine how trusted the project. Sometimes the good bounty managers can also get a crap project or even scam project. It's better for the newbies to keep focusing into the reputation of project.