yes its true, votes after 7 days do not add steem, not sure what it does to voting power....dtube just creates a post on the steem blockchain, also cannot generate rewards after six and a half days.
The half day difference is where it cannot receive upvotes but can recieve flags.
Great i asked few people allready ,most where unsure and this makes sense so far hmmm i also cannot take down the video and repost it ? To get steem again ? i dont wanna sound greedy its just a lot of work and im the friend of efficiency 8)
Great question! Once it is locked into the blockchain, it is there for good! But that doesn't mean you cannot post it again, you can embed youtube or dtube links in future posts!
I wouldn't recommend posting the same content over and over again though, some people might consider that spam - but if you have new comments about the video there is no reason you couldnt post an 'updated' post!
And a smart answer Thanks , good hint 8)