Icos look for bounty hunters to promote their project through the power of social media.Sometimes, some of these hunters also double as ico investors. But it looks like bounty hunters understand ICOs project and are able to determine very good projects before they invest because of their experiences in different projects.
I could say I am such an example. I have promoted over 7 projects so far and in 3 of them I ended up investing also. Last one was MFX. I could not resist not getting an affordable Masternode for only 7.5ETH, while I was promoting it 5 times per week
I guess we all become attached with the projects we promote for several weeks/months...