It was one of the tools that allowed me to maintain healthy credit card usage habits. In my idle time when messing around on my phone I’d gotten into the habit of just transferring money from my checking account to my credit card, often in excess of my actual balance, so as to cover “pending” purchases.
Not only will my bank no longer let me do that, just to twist the knife a bit, they will let me make multiple payments totaling the pending total due so long as no individual payment exceeds my actual balance.
So it’s not that they can no longer handle negative balances on the card, it’s just that they’ve half-ass made the interface disallow it.
High-Yield Savings Accounts are something distinct from normal savings accounts. I don’t believe there are any HYSAs being offered that have rates as low as 1%.
You can find many institutions online offering HYSAs. It is definitely pretty common. In personal finance circles it’s very often recommended to put your emergency fund in a HYSA.
And yes, as you noted, HYSAs have different rules than normal savings accounts. Just like how CDs do.