According to the sites' author:
The Earth's Leading Authority on Conveying Coffee by Bicycle- Since 1996
http://bicyclecoffeesystems.com
Well worth a leisurely read for those of us who really care about such matters.

Introduction
I created this web site to share the joys of bicycling and drinking good coffee, at the same time.
I also wanted to dispel some of the misconceptions about coffee being a harmful beverage or a cause of dehydration, and to provide a well-referenced compendium of coffee's health benefits.
I don't get any compensation for this site. All I've ever received is a load of equipment to evaluate, and a few bucks in referral fees from Amazon. If you shop at Amazon then please enter their site using my affiliate code, click Amazon.
History
I'd been into bicycle touring since moving to California in 1979. Until someone showed up for one of my tours in 1982 with a Melitta cone filter bungee-corded to her panniers I didn't realize how important coffee was to some cyclists (probably because I had rarely drunk good coffee). It wasn't until 1985, when a girlfriend in Palo Alto started feeding me freshly ground Peet's coffee, that I was hooked. When I got married, I ended up with a long commute, and I often rode my bicycle down to the Cal Train station and took it on the train. I found a need for a good way to transport coffee by bicycle.