Yes, this news that we get "interest" simply by having SP is very intriguing to me. When I was first active on here a couple weeks ago, I was curious abut the "currently collecting 0% APR" text within my wallet.
People told me there used to be interest paid but it was no longer the case. Now it seems like perhaps interest, in a sense, is still getting paid? That makes me want to buy even more SP if it is true.
0% APR refers to SBD only.
At one time, it was better to keep SBD because SBD would get a 9.5% interest rate in the early days.
Now Steem Power holding is the new winner ever since a hard fork that happened awhile ago.
I wish they would remove that text from the wallet. It is confusing. :) Thanks for your wisdom!