def notifier_title_cleaner(otitle):
    """
    Simple function to replace problematic Markdown characters like `[` or `]` that can mess up links.
    These characters can interfere with the display of Markdown links in notifications.

    :param otitle: The title of a Reddit post.
    :return otitle: The cleaned-up version of the same title with the problematic characters escaped w/ backslashes.
    """

    # Characters to prefix a backslash to.
    specific_characters = ["[", "]"]

    for character in specific_characters:
        if character in otitle:
            otitle = otitle.replace(character, r"\{}".format(character))

    return otitle