Many of us have built our web presences on the WordPress CMS. It works, it's flexible, and it's open-source (gotta love that).
But what about it's ability to scale? There are undoubtedly thousands of free themes and plugins. There are even a considerable number of premium themes and plugins that can be integrated into your environment.
I found it interesting to see that, even with so many selections and choices out in the WordPress community, many site designers are using a small core of extensions. Check this infographic out and see what I mean.