In the past, I recommended Joomla for sites that are somewhat complex and are going to be managed by someone with strong technical skills. That recommendation still holds, but the new design of the back-end elements makes the system a bit more accessible to beginners, especially when the sample content is used.
Now that the responsive design features have been baked in, Joomla has a lot going for it for mobile developers as well. With a huge community, plenty of extensions and many templates, Joomla 3.0 has a lot to offer developers. I am looking forward to watching this platform mature.
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