Is CIS 2011 Premium still free for comercial use??
There are many voices on the forums that NOT
CIS 2011 Premium (also known as CIS5 Premium; and formerly know as CIS Free) is free for both personal and commercial (business) use.
If you want additional services (such as live support), you can purchase them. Note: the free and paid versions of CIS have the same functionality (i.e. the free version gives you access to all of same the CIS functions as the paid version).
For more information on the difference between free version and paid packages, see this post.
[Note: some of the titles for CIS have changed with the update to version 5 (and these are shown in the link above), but these name changes have not been completely implemented on the main website yet]