I have it set up on the subs I mod, /r/GiftOfGames and /r/forhire, it's pretty simple.

For simplicities sake, we'll just say that there are three types of post on /r/mortalkombat. [Reveal], [Poll] and [Meta].

First step is to remove all posts that do not use these tags and have AutoMod leave them a comment like so:

---
    # Required tags
    title: ["[Reveal]", "[Poll]", "[Meta]"]
    modifiers: [inverse, includes]
    action: remove
    comment: |
        Your submission has been automatically removed because the title does not include one of the required tags, [Reveal], [Poll] or [Meta]

        Please check the [sidebar](/r/mortalkombat/about/sidebar) for information about tagging your submission properly. 
---

The ---s tell AutoMod where new pieces of code begin and end.

Next step is automatically giving link flair to posts that use the tags (which will be all of them since ones that do not will be automatically removed and a comment will be left to them):

---
    # Reveal flair
    title: "[Reveal]"
    link_flair_text: "Reveal"
    link_flair_class: "mk-reveal"
---
    # Discussion flair
    title: "[Poll]"
    link_flair_text: "Poll"
    link_flair_class: "mk-poll"
---
     # Meta flair
    title: "[Meta]"
    link_flair_text: "Meta"
    link_flair_class: "mk-meta"
---   

This searches for [Reveal], [Discussion] or [Meta] (Upper/Lowercase does not affect it) at the beginning of the post title and if it finds it, the post is given whichever flair it needs. All of this usually happens within 10 seconds from when the post is first submitted, so it's pretty dang fast.

Here is some bonus code, which is how to make it so there are certain tags that only moderators can use, such as [Announcement]

---
##### Mod only tags
    title: ["[Announcement]"]
    user_conditions:
        rank: "< moderator"
    modifiers:
        title: includes
    action: remove
    comment: |
        This post has been removed automatically because it includes a tag which is reserved for moderators.
    priority: 1
---

Looks for the [Announcement] tag at the beginning of the post and checks the OP's rank. If they are not a moderator, the post is removed.

The link flairs must be created via the stylesheet.

To do this, you first define your base link flair shape like so:

.linkflairlabel {
            padding: 0px 6px 1px 10px;
            height: auto;
            border-radius: 0px;
            border-top-left-radius: 16px;
            border-bottom-left-radius: 16px;
            border: 0px solid;
            color: #333;
            font-weight: bold;
            font-style: normal;
            font-variant: normal;
            font-size: 13px;
            font-family: Tahoma, Arial, sans-serif;
            cursor: default;
            vertical-align: middle;
            position: relative;

This creates something that looks like this: image

You then add specifics for each link flair label you want:

.linkflair-offer .linkflairlabel {
                background-color: #f5b400;
                border: 1px solid #e5a800;
                color: #fff;
            }

You can of course have a unique link flair shape for each link flair, but having a base that you customise helps tie the style together This one you can see on /r/GiftOfGames as well as the others.

Hope this all made sense to you and if not, I would be happy to just edit it in for you.

Infact, consider this my application post for the moderator job. I'm a highly active and productive moderator as you can see from the moderator log matrix from the past 2 months at /r/GiftOfGames. I've done 44% of the mod actions out of 11 moderators. I love Mortal Kombat and I love this community and I just want to see it thrive. I can do CSS as well as AutoModerator script and I am infact a freelance graphic designer. I love giving, hence why I'm a moderator at /r/GiftOfGames and have given away (literally) hundreds of games there, including the Mortal Kombat Komplete Edition at one point. I've taken a lot of enjoyment out of this sub, and would like to give back. I'm in the UK, and commit my free time to arranging weekly game nights over at /r/GiftOfGames, and I'd love to do the same here when MKX comes around. Got the Kollector's Edition preordered, can't wait. Thanks, and I hope this helped!