Thanks, cblaisd. I was aware of the privacy problem.
What I did was to install the dash software on an old laptop I seldom use, and which also has IDcide installed (IDcide purports to be able to block resident programs from answering outside queries or sending reports back). Obviously, the intent was to use it only when I wanted to shop through it.
That was some months ago. Now I want to order some stuff, and was trying to decide whether to go through ClickRewards or pull out the laptop and modem and go through dash. Dash would give better miles, but if they're Tango Uniform (or otherwise not responding promptly) I'll go Click Rewards.
Anyone else have experience with dash in the last couple of months?