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I think that it is good to do manual upvoting.
People should stop focusing on the profit, and start focusing on a good community. A community, where people actually care about each other's posts and comments. Both with reading and upvoting them. Hive would thrive in that way.

Timing won't matter anymore, unless it's over 1 day old.

Thus, I can upvote as soon as it has been posted?

Yes, no penalty for voting asap but also no higher curation rewards for being earlier than others unless they vote after the first day.