In some of the threads I'm following lots of users mention the word "bounty campaign" or "bounty manager" which is a term I've never heard before. Is it something similar to a marketing campaign?
Your thought is right. Yes. Bounty campaign is similar as marketing campaign. To know more about it you should go bounty section. Hopefully you will get a quick idea about how bounty campaigns work.-
https://bitcointalk.org/index.php?board=238.0And the bounty manager is the man who manage the bounty or who manage the marketing details in this forum in behalf of the project. In one word bounty manager handle bounty campaign.