I just glanced at it. My guess is you'd be fine, but I wouldn't trust anything
like this overlooking everything I typed. There are passwords, etc. that would be communicated out. I don't like opening up such a risk to me. If It was a computer solely used for school assignments (think Jr. High/High School) that is isolated from anything financial/private. I think it could be helpful and would probably do it.
Another option would be to run it in a virtual machine and do those work tasks inside a virtual machine with this script running. Thereby protecting your main machine.