I'd say that last one was simply a spamming ad. Look at the "sig" line. A beginner who claims to be unable to figure out how to post isn't going to take time to set up a signature like that with different highlights/fonts.
"Bumbling but adorable newbie" is just one guise auto-spammers use.
Also, you can tap the drop down arrow next to your name (in the left column), and select Posts.
If you’re using a mobile device, you can see if anybody has replied to you by tapping the 3-bar icon in the upper right. You might see a number next to the bell icon. Tap on that and you’ll see replies.