Is bounty programs impacting negatively or positively to the success of icos?
Bounty programs today has a higher chance of being success because people are investing a huge amount due to the hype in the market and different positive speculations.
Eh -- I wouldn't go this far. I would say, without a doubt, that more and more people are investing into ICO's. But the success of these projects (measured by the succeeding of what was laid out in the white paper by the dev team) isn't high. Most of these coins are dying off in a couple months, prices of the coins are crashing, and I would think that people are slowly starting to understand that these coins are nothing more then a moneygrab at people who are greedy as well.
There's a lot of ICO's out there who became successful for having a bounty campaign, and sometimes it depends on the project, the team that will handle the campaign or the manager itself, so choose the right manager to handle those bounties, choose those who has a high reputation here in forum, and of course aside from that they should choose the right marketing.