Good idea to make videos, reviews and video marketing… but few topics will be better to use to advertise zencash - example here is topic “ZenCash pool review (suprnova)” and video on youtube "Most Reliable Mining Pool ? Suprnova Review - Zen, Zec, SIGT, LBRY, Decred " This video is mainly advertisement for suprnova not zencash … and more zcash then zencash (because you choose not good momenet to view whattomine where zec is the most profitable… why not choose when zen is at the top, and there were so many such days
For advertisement for zencash it will be great to make video with topic for example (i did not analyze what people looking for so it is only examle) “What is the best privacy coin - zencash, monero, zcash, dash” and make reviews and choose zencash as no 1.
To be effective (such video marketing) first somebody should analyze what people search in google and in youtube… then make such video and hidden advertisement for zencash… at the end - smart marketing team use seo to take such video at the top10 in google and youtube (for few keywords). Then result for zencash will be 10x better…
but still good job and zencash team should fund more activities lie this but need more carefull choose topics and plan for advertisement.