Acunote is a customer of tarsnap and so am I personally. The professionalism and transparency that you can see in this RFO are a big reason why I use it and recommend it. The quality of the product/solution is the bigger reason.
What's not mentioned is that throughout the outage the customers were getting timely emails from Colin letting us know what's going on. We didn't have to go to a blog, twitter, facebook or some other ungodly place to find out what's happening. This is how it should be done.