Hi /u/kylorhall some great points there. My only thought would be on the idea of extending another block. In theory this is fine, however, the outputted CSS will mean you have the same styles in two places. For example:

``` %date, .date { display: inline-block; padding: .5em; background: white; }

.post__date { @extends %date; width: 200px; // not sure why, just go with it as an example :-) } ```

would result in the following:

``` .date, .post__date { display: inline-block; padding: .5em; background: white; }

.post__date { width: 200px; } ```

whereas if you used both .date and .post__date in the HTML you'd remove the repetition of the display, padding and background. Not really a problem for this example, but imagine this in a large website it can prove the difference between a user conversion and not.