nichetube

i want to create a profitable niche site, But I don't' understand the correct keyword or product selected system. Please share your opinion and help me to decide the correct one.

Hey guys and gals, I'm new to the YTTalk community, but it seems like y'all are pretty welcome to new comers from what I've read today and I could sure use your help, so please bare with me, I know it's long. Anyway, me and a few friends started up a channel back in August of this year...

Wazzzzzz up everyone =) Just wondering if you guys pick a niche and ONLY stick with it on your channel because i usually do vlog type videos but also had gameplay and cooking videos and challenges and other type's of videos on a playlist. There was a time when i first started and i didn't...