I'm a n00bie data scientist with about 12 years experience in IT. I discovered graph databases in my DB course at Northwestern University and they were very interesting. During an interview I was asked if I knew anything about graph DB's and I said just at a high level. After this point, I noticed quite a bit of companies were looking for this experience, so I decided to study for the exam and finally passed! 
I'm looking forward to joining this online community of experts so I can gain more experience and knowledge in this area as I've become very interested in doing more with graph DB's.