I think you missed this in the Email.
If this list shows more than one address lease send me all the addresses as these will show up in the block explorer.
So I would say no you don't need to respond. At least I didn't. (I only have one address).
Yeah, but underneath that it also states:
If by the 12th you have not replied we will pay the remaining addresses in QBK,
So if expecting payment in btc, and if you have not replied, it sort of sounds like you'll get paid in QBK only, regardless if you have one address or not? Or they mean if you are lazy, send in the addresses after the 12th, then you can just get QBK. I assume there has to be a cutoff date where payouts end.
I chose QBK for this first time around, so not a biggie to me. Just not sure if BTC people need to send it in, even if they have just one address.