Hello,
Yes it can be used with other content. You can simply add content to the head or footer via the interface in the admin panel.
So if you want the word cloud at the bottom, you just add your page content in the header and vice-versa. HTML is also enabled to make it easier.
For a demo if the back-end have a look at:
http://www.dlls.info/cloud/admin
Username: admin
Password: pass