Yaro Starak is giving away some free versions of Camtasia Studio 3.

Here is what his steps say :

Here are some clearer instructions -

Step 1
Download the software

http://download.techsmith.com/camtasiastudio/enu/312/camtasiaf.exe

Step 2
Fill your name, country and e-mail on that URL below and Techsmith will send you a key to unlock the program.

http://www.techsmith.com/camtasia/pcpls.asp

Step 3
Install the software and then add the key to unlock it and you will have the full working
version of Camtasia Studio 3.

Note: This offer is only for PC users as he says