The following Infographic is a useful checklist for your Mobile SEO.
(You can also find more infographics at Visualistan)
Personally I encourgae anybody using WordPress for their Online venue to use a responsive WordPress theme. You can also do it the way we did.
The NMS Blog is based on one of the most basic WordPress theme (Twenty Ten) together with the Jetpack by WordPress.com plugin. The result is here.
To conclude, here are two useful links enabling you to test your Google Mobile friendliness:
https://www.google.com/webmasters/tools/mobile-friendly/ (test if your site / page is Mobile friendly)
https://developers.google.com/speed/pagespeed/insights/ (digg and improve your site / page performance)