I much rather give out SBI shares as prizes than STEEM itself. I do this because it gets people more involved in the blockchain when they have shares, rather than money that they can just cash out straight away. It provides upvotes which can be hard to come by for a lot of smaller accounts and i just like the concept in general.

This however can apply to steem-bounty as well. I have only found it recently but it does make things more interesting and gives people more incentive t use the site.