I almost never bother (this is only the second campaign I've ever signed on to).
The only reason I went for this one is that it came right after their first one, which went off flawlessly and because about 60% of my purchases were simply discounted purchases of minis that were regular, preexisting stock.
They had a great record before.
I mean, I'm mostly sure we'll all get our minis eventually - there has to come a point where even they figure out what they have to do, even if it's the hard way. But watching them crawl towards the incredibly obvious answer is so painful.