That's true! I got this message from Hivebuzz 3 days ago...
I have received 35K HP for my content and curation, so I bought the rest of my stake... Tbh, I got some when a hard fork from STEEM happened, but still, I did buy a big chunk of my HIVE...
So, buying is a valid way to grow your stake too... ;)
After being away for so long here, one of my come back moves is buying some hives later this month. It feels good to be back.