Let me show you my proof that it won't go away:

1. Editing... Highlighting the introduceyourself tag to delete it.
2. I have DELETED the wrong tag.
3. Updating post...
4. But the wrong tag is still there!

The reason why I mistakenly posted this with a wrong tag is that I posted an introductory post for my new account (personal account). I made sure that I logged in to the right account here on Steemit. But I didn't know that I also had to log out of steemplus and log in again with the right account, since I got steemplus installed on my browser. That's why when I posted the introductory post, it appeared on this account, and not on my new account.