First, I have to give credit to Honey because it has saved me serious money on a few occasions.

The downside is that this plugin is incredibly annoying if you have it enabled all the time. It's constantly popping up whenever you're on ANY e-commerce site. Adds an extra layer of annoyance if you're just trying to casually browse, get inspiration, or "window shop."

Another downside is that 9 times out of 10, the plugin doesn't come up with any savings at all. But I don't begrudge it too much for this; e-comm discounts are way more tightly controlled these days. One last irritation is that using it is not always seamless; sometimes it will refresh your whole checkout page in a way that requires re-entering info. Obviously this is no big deal if you end up with a good discount.

IMHO it's worth having, but best to keep it disabled unless you're actively finalizing a purchase.