About meta tags — need advice

I need advice about changing the meta tag section on the right-hand side of my blog. I did that when I first got started for the purposes of “looks.” Now, I think I may have made a mistake that could affect the ability to receive comments. I noticed several articles on this subject in your archives. Here’s what I need answers to:

(1) Is there a danger in deleting the entire Meta tag section on the right-hand side of my blog? Can doing this, for example, affect receiving comments?

(2) If so, which file should I replace?

Thank you!