It's more than 90% made to be for ico as the number of bounties campaigns in services board is incomparable to it in bounties board (i countd 10 new ico announcments in one day here in the forum). Sharing risks with investors is the main factor for this bounty prosperity in the ICO system.
Bounties could be a useful tool for all sectors in the market; means it's not only in the bitcointalk forum. I didn't find so much thing by searching about similar programs in Marketing.
Yeah, maybe more than 90%, and soon maybe, will grew up more.