https://www.youtube.com/watch?v=Jm4z4WMLymQ
I just quickly browsed some of that youtubers videos. She lost any credibility as soon as I saw her supporting bitconnect. I didn't watch the video so maybe I'm jumping to conclusions about her conclusion but anyone promoting this on Youtube either hasn't researched to project properly or doesn't have their viewers in their best interest in my opinion.
For the original poster, I've been a big fan of Block since March/April this year and I've held on to mine the entire time. It's run up quite a bit. I think it is still a long term hold but maybe not going to be the 10x overnight that everyone seems to be looking for.
Planning on holding this aswell for longterm and keep adding onto the portofolio every once in a while. I personally don't pick coins that go 10x overnight though I got lucky with Vertcoin (still holding). If something goes 10x overnight its just a PnD imo. Every good coin will have atleast some organic growth and FOMO to push it that 20-25% higher.