LinkedIn is the most vital account any bounty hunter should have. Most Project team members are there. Usually, mas gugustuhin nila mag-advertise sa LinkedIn since these could potentially create partnerships and gather more investors.
LinkedIn is different from all social media campaigns, I discourage everyone to create LinkedIn then mag spam ng mga kung ano anong ICO na hindi naman alam kung ano inadvertise nila. Personally, kapag may nag aadd sakin tapos makikita mong header "bounty hunter", "follow for follow", auto reject sabay report as spam sakin agad yan. I keep my LinkedIn connections within professionals sa ICO and other fields, hindi yung ginagawang jejemon friendster ang Linkedin.
I would agree that Linked In is only to be used for professional purposes. Kasi if you try and put so many ICO ads from your bounties eh baka maging much more stricter and mga yan when the time comes na mamuro ang mga crypto related ads sa kanilang platform. Better stay away to things that you really cannot know.