Pro Tip: Install LGTM as a Google Chrome Extension. You can then LGTM with a click of a button.
LGTM.in is shutting down on 2018-10-01. I've been busy with a lot of things, and cannot spend time on this. The source is available on github.com/rahulsom/lgtmin and can be used to spin up a similar service. If you're interested in purchasing the domain and continuing to run this service, let me know, and we can work something out.

What

Looks good to me (LGTM) is the most popular comment on Github, perhaps. But LGTM is boring. So we spice it up with some images.

Boring

LGTM as text

Fun

LGTM with fun

Why

Crafting images and picking them works fine on a leisurely day, but at crunch time, it helps to crowdsource your LGTMs.

Quick and Easy

This is the effective javascript in the extension. Feel free to create your own if you don't like the default implementation. The extension source is here.

        $.getJSON("http://www.lgtm.in/g", function (data) {
          $("textarea[name='comment[body]']").
             append("\n\n" + data.markdown);
        });

Contributing

The project is hosted on Github at rahulsom/lgtmin. Feel free to fork it and send a Pull Request. It also serves as the issue tracking system.

There is the occasional porn/hatespeech/whatever else that makes this community look bad. If you see that, please send a tweet out to me, and I'll exercise the kill switch.

Community

On Twitter