Let's say we have a random basic blog or informational website: just some pages with information, a sidebar with an overview of the archives, the normal stuff. We know of this website that it's built with a CMS. How can we get to know which CMS built this website?
So I'm looking for basic, general typicals of several much-used CMSs, so that we can get to know the working power behind any informational website or blog.
For example, a typical might be that WordPress adds such a line to the HTML:
<meta name="generator" content="WordPress 3.5.1" />