Default sites and selectors for #spoilerSlayer

default_sites.js

{
    "sites": [
        {
            "urlRegex": "avclub.com",
            "selector": "article, .sidebar-item, .curation-module__item"
        },
        {
            "urlRegex": "buzzfeed.com",
            "selector": ".story-card, .card--article-featured, .card--article, .card--package, .card--video, .sidebar__link, .js-now-buzzing__list > li"
        },
        {
            "urlRegex": "facebook.com",
            "selector": "._6rba._6rcg, [role=\"VIDEOS_MIXED\"], [data-highlight-tokens], div[data-testid=\"fbfeed_story\"], div[role=\"article\"], #pagelet_trending_tags_and_topics ul > li"
        },
        {
            "urlRegex": "feedly.com",
            "selector": ".entry"
        },
        {
            "urlRegex": "gizmodo.com",
            "selector": ".featured-item, article"
        },
        {
            "urlRegex": "news.google.com",
            "selector": ".xrnccd, article"
        },
        {
            "urlRegex": "plus.google.com",
            "selector": "div[id^=\"update-\"], c-wiz div div c-wiz"
        },
        {
            "urlRegex": "reddit.com",
            "selector": "article, .sitetable > .thing.link, .usertext-body, .scrollerItem, .Comment, .Post"
        },
        {
            "urlRegex": "slack.com",
            "selector": "ts-message"
        },
        {
            "urlRegex": "tumblr.com",
            "selector": ".post_container, article"
        },
        {
            "urlRegex": "twitter.com",
            "selector": "[data-testid='tweet'], .stream-item, .tweet, [data-item-type='tweet'], .trend-item, .AdaptiveNewsLargeImageHeadline"
        },
        {
            "urlRegex": "youtube.com",
            "selector": "ytd-rich-item-renderer, ytd-comment-renderer, ytd-radio-renderer, ytd-grid-video-renderer, ytd-compact-video-renderer, ytd-video-renderer, .yt-lockup, .related-list-item, .comment-renderer-text"
        },
        {
          "urlRegex": "www.theverge.com",
          "selector": "ol.c-rock-list__items, .c-entry-box--compact"
        },
        {
          "urlRegex": "cnn.com",
          "selector": "article"
        },
        {
          "urlRegex": "slate.com",
          "selector": ".section-feed__item, header, .article__content"
        }
    ],
    "__exportVersion": 1,
    "exportName": "Default Sites",
    "comment": "Popular sites and selectors to get started with Spoiler Slayer"
}

No need, it's sorted.
I added manually ytd-rich-item-renderer for youtube and now it works.
Sorry and thank you for your time.

Edit : Also had to add [data-testid= »tweet »] for Twitter.

Thanks for the comment! I've updated the default list with those selectors, so the changes should propagate to everyone shortly.

Could you add x.com as well?