I really find what you guys did by offering a free online certification exam a great form of promotion. It motivates people like myself to better learn and get attached to a product...
Are there any other established software products with a similar offer you know about?
Thanks a lot,
PS: When you google it, you find only free courses (which is something else), or free certifications for HubSpot or other similar SEO services (which are not software products the way Neo4j is).