We recently received a phone call from a client who had all of the 'Read More' links dissappear from their Joomla web site. We carefully checked the articles in question in the administrator interface and could clearly see the 'Read More' link indicator in the desired place in the articles. But they would not display in the front end, no matter what we tried. It turns out the problem and the corresponding solution was so obvious, it fooled us for a few hours. (Yes, hours!)
We often get asked about high profile Joomla sites. One of the really nice things about Joomla is that its powerful enough to run even the most complex or high traffic websites while still being simple enough for "normal" humans to use. We mostly use Joomla for small and medium business websites. Still its nice to know that it can grow with you if you ever need to run a huge empire!
So here's a list (in no real order) of well known or large websites that we find using Joomla.