Wow. I learned a lot from this post. I never knew that the posting key can be used to log in on steemit. I thought the master key who can only do that.
The introduceyourself: I had regret about this. The 1st thing i did after getting my password from steemit is posting my introduceyourself. For me at that time is to just post and to see if steemit wasnt a scam with no follower at all, no profile and cover photo. My attached photo did not even show any proof that im a real human. Gosh if a have read this post earlier. But im sure ill recommend this to my friends joining steemit.
And especially this

Remember that the money for rewards doesn’t come from your own SP or STEEM balances. Your SP determines how much power you have to parcel out the rewards pool for the entire platform. So your stash doesn’t decrease when you upvote people.)

This is what I was just looking for yesterday. I got to encounter steemauto where we can control the value of the upvotes we're giving. I wondered why some people control the value?
It made me think that maybe by upvoting our sbd decreases. But now I know. Thanks to this post. And maybe it's bc of this that they want to control the value of their upvotes.

You can increase how often you can give money by decreasing the % you give each time using an app like SteemPlus

Good job @indigoocean! Thank you.