Thanks for sharing. I am selling all my SBD, but man this think is just going higher and higher:). Some investors and speculators probably bidding up the price, not knowing anything about SBD. Just my 2 cent opinion.
The 1 USD peg is enforsed by two processes^

if 1 SBD > 1 USD then mass of SBD tokens will rise with new rewards
if 1 SBD < 1 USD it is profitable to buy them on market and convert to STEEM.

The first thing is slow but inevitable, The second is very fast provided it's all OK with transfer from exchanges.