Begging. Or as you said: Taking part in bounty campaigns.
Crowdholding runs a decent one. Check out the
BitcoinTalk post.
Or the actual bounty project on
their platform.
Most powerful is probably the commission for referrals. Crowdholding gives 10% on each, which is quite cool.
All information can be found on the landing page, as well☞
https://ico.crowdholding.com It seems that in your post you are saying that begging and taking part of a bounty campaign are the same, and that is simply not the case, even if you do not believe me, begging is forbidden in the unofficial rules of the forum, the fact that bounties are allowed signify that the moderators think there is a significant difference between the two.