If I click on the "publish" button or on the "upvote" button a message pops up saying I don't have enough something. SP indeed, but even some other stuff. It's really unclear.
That's pretty boring in my point of view but, ehy, it's not my decision. I'm cool with it, but I would really like to be able to be a fully part of steemit from day one. Even because I wrote a good post for my introduction! I've put a lot of effort in it :P