Solid read @edgarare1. It's always a great thing to be able to refresh all that knowledge.

In Steemit you can find out which tags are most used here
Those are definetly most often used tags, but not most often visited lol :)
Using tags in theory can bring more traffic, bit that's just a theory. I asked several people if they ever check tags to see if they can find any post worth their time and the answer is pretty much the same. No. They don't. Hardly anyone does. At least that's my impression so far.

I wonder if you ever check tags to see what other people write? I'm fully aware that some (palnet,steemleo,newsteem) can get some extra traffic, but there isn't many tags which are attracting real attention.

Morning or evening? If you get the ideal time to publish your content, you'll get more visitors.

Ehm, that's an interesting question. Since our audience is usually scattered across the globe, then morning in your place can mean evening at someones else location :)

Maybe I'm wrong. However I've noticed that it matters only if you post something on weekday or weekends.

Great read. Upvote on the way.
Piotr