Your friend got the point for that! Of course, bounty rewards will be lessen as days goes by because the longer the bounty campaign period, the more Bounty  hunters will join specially if the project looks promising! 

It is now Bounty that we follow the income is getting smaller even though the day is getting more and more Bounty is in the forum but why the smaller the income may be due to the increasing member that is in this bitcointalk forum so that the results we get the smaller

The number of participants in a bounty campaign definetly matters whent it comes to the tokens distribution. Too many people in one bounty campaign is the sign that there is not a big chance for a lot of tokens in the end.

There are 2 possibilities. The first possibility could be that the income will become less and less as the number of participants increases. Second, it may be the opposite, the income becomes increasingly due to the achievement of hardcap. Endure to the end so you know what will happen. Good luck

Yeah ...same feeling. I started doing bounty recently and had been stumbled by 2 projects and both were delayed. It puts me in dilemma of leaving it or contunuin. BUt I started evaluating hw much I was losing bcz of nt participating in other bounties. I made a hard choice of ditching the bounty and moving on. Since then I only do bounties whose ICO is 3-4 weeks ahead . SO diversify in a sense. You should also do the same in my opinion.

Main issues is Participants who join the campaign. Many of Bounties apply Stake Systems. So, i dont think Long Bounty will decrease your earn.
But, i can conclude that project isn't attract Investors too much. Developer want reach their cap and sometimes extends end time can solve it

Meraki is correct it will depend on your rank, if your a jr member, then it will take time to earn
but if your like legendary member everything is easy picking, so if i were you
im going to get to a higher rank before joining any company or if your lucky if there is an available
campaign for junior just keep posting until your at a higher rank it will come,

I would be hesitant to join a bounty that lasts a super long time, like more than a couple months. To me, there isnt as much potential for a long bounty.

I think you should see the project that you follow, if the participant who participates more then the rewards you receive will also be a bit, and I think that's normal, because the allocation of rewards is shared with all participants.

In general, one can agree with this statement. In any case, if the ICO campaign is prolonged or postponed, it is generally bad. The ICO time becomes longer, however, as a rule, it is carried out within the same allocated amounts in tokens or by something else. If you have an account with a large rank, then this is not entirely bad. The longer the ICO campaign lasts, the greater the ranks gain from this. However, the more time you spend on one ICO campaign, in the same period you could participate in two campaigns of a short duration. By the size of payment, I think that as a whole participation in long campaigns also does not bring significant profits, although there are no rules without exception.