i was even wondering about this. i have only heard of one project which paid bounty participants with ETH. all of them are not taking the line of paying in their native token.

this has the effect of washing down the price of the token once it touches an exchange. if the dont pay in their native token, then the prject token price would be preserved.

another thing is that i dont quite why and when they started selling tokens for over a 1USD. BEfore it was less than a cent. but during the december time, it sprang up to even over a dollar. guess it has dropped down to a stable value of 10cents right now.