Ofcourse they are doing it, and to be hones I don't blame them for making the money... but they could at least say that this is what they read or think about it... instead advertising it...
or they could do like official reviews of ICO's
like -ok this company paid me to do review on this ICO's blabla bla that would be fair... as people are investing a lot of money and they trust some of the youtubers they watch...
and its really not cool if those youtubers are not respecting theire fans and making money by advertising shit scam icos...
so long story short
It's not a bad think to earn money by doing what you love but be honest and dont make money on somebodys loses
btw. Hello from Oxford!
I think it's also key that they're open and honest about it, so we know to what degree we can weigh their opinion.