Feel free to comment if you feel the urge to comment.
However, do not in any way feel guilty if you don't have a comment, nor if you do have a comment but don't want to comment.
If I don't comment on your comment it does not in anyway mean that I did not like or appreciate your comment.
If I do comment on your comment and the comment is in some way unsatisfactory, it is not a reflection on the original commenter or her comment.
If you try to comment and the comment does not appear on the blog it is most likely that the comment, for an unbeknownst reason, did not register with Blogspot. Feel free to re-comment your comment. Feel free to not re-comment your comment.
Comments are available for the public viewing, but most likely are only read by me and the commenter and the other commenters who have made a comment on the same post, if there are any, which most likely there are not.
You are not your comment just as your comment is not you.
Often, anonymous comments are not anonymous being that many commenters sign their anonymous comments with their un-anonymous names.