If you want to support Prime You can also join the campaign from their social media that will be paid in ETH.
I think, this is a great idea to do as of the moment. While helping this platform to be known in social sites at the same we can be able to earn good amounts of ethereum. This is something what people wants especially now where the market is down.
You mean they need to have a bounty program for them to be able to be more know here in the community. It's what basically the only way to do it and hopefully they can be able to have some.