Thank you for the comment!
Let's remember that SN is bitcoin-centric now, but as @k00b said he would like to extend it to more areas:
Right now, much of the conversation on Stacker News revolves around Bitcoin and related topics, but over time there will be new topics that are covered on different subs.
So offer sats to not-bitcoin-related authors seem a nice way to promote SN and the Bitcoin ecosystem in a single step.