Benefits:
- No license cost
- 100% of your budget serves to customize system to your needs
- Full flexibility in modifying the code to fit your needs
- Added security through transparency
Concerns:
- No warranty from copyright owner - ask your service provider instead
The License in full:
www.fsf.org/licensing/licenses/gpl.html
Frequently Asked questions:
www.fsf.org/licensing/licenses/gpl-faq.html
Still have questions?
Please consult your local lawyer.