For the one on the sidebar, should I change that to class?
You could replace that with the same button. You can also change colors like this:
<a href="orange button">Button text</a>
<a href="dark button">Button text</a>
<a href="blue button">Button text</a>
Not every color is supported so you can set a custom color like this:
<a href="button" style="background: pink;">Button text</a>
Other classes:
- button-small
- button-large
- button-outline
- button-arrow
Example:
<a href="orange button button-arrow">Button text</a>
You can even throw font icons into the mix.

See
MD > Site Design > Font icons for a list of icons you can use, then put them in a button like this:
<a href="blue button"><i class="md-icon-user"></i> Button text</a>
Change the
user keyword to a different icon loaded in your Font icons manager.
I hope that gives you some creative ideas.
On that one, I would like to say more Get Marketers Delight. I would like to encourage others to use your theme. Any suggestion on language?
I appreciate that! The above is a good start, but it will probably be better if I made a few banner images for the affiliates program so you can just use those.

Let me get back to you on that... I will put them in the new affiliates area in your redesigned
MD.com account area.