Welcome to SteemIt. That is a fun introductory meme. I definitely have more excuses than dollars.
A post can have five keywords. The keywords are separated by spaces.
A great way to start an account is to have a post with the tags #introduceyourself and a tag for your country or region of the world. You might include tags for your primary interests.
BTW: It is best not to upvote your own posts.