HBD is a bad idea that Hive took as legacy from STEEM (SBD).
This scammy speculative tool is sold by the traders as "stabilizing"? Reminding you of fiat? Let me explain:
HBD can be converted to Hive and back estimating HBD as 1usd and estimating Hive as the USD avg in 3.5 days.
Sounds complex? Sounds stable?
Hive supply is above 400 million, and there are about 32 million HBD.
If Hive will avg half a dollar this means "fully hbd converted hive supply" is 464 Hive.
But Hive is selling close to 0.33$ which means supply at that price is 496million Hive.
But this is also very optimistic because the more HBD converted and Hive supply increasing then Hive price will decline (supply and demand...). Especially with all time low demand.
So is more likely that converters and sellers will see an avg of 0.20$ which means 550 million Hive coins in the market.
You can see where this is going, and remember HBD savings also give 20% annual interest.
So HBD is a ticking bomb for Hive price and I don't reccomend to stay around and wait for it to explode on your face.
This is just my personal opinion, do your own research.