Every company that releases free software has a legal department, and that legal department usually advises them to:
1. Use a proper license (drafted by lawyers).
2. Include the license information in every source file.
3. Reference the license in the documentation / metadata.
Now, is this overly cautious? Maybe. But I think that following what an actual legal team's recommendation is is much more preferable to doing anything else.
Not to mention that company lawyers will be very worried about code under a license as brief as the one you wrote (especially since it was not written by a lawyer). So just use CC-0 or something and call it a day if you really don't care -- it is never a good idea to write your own license and it will actually result in less people using your code because they cannot be sure it would be interpreted as a free software license.
Not to mention that company lawyers will be very worried about code under a license as brief as the one you wrote (especially since it was not written by a lawyer). So just use CC-0 or something and call it a day if you really don't care -- it is never a good idea to write your own license and it will actually result in less people using your code because they cannot be sure it would be interpreted as a free software license.