This blog post has tweaks, snippets or fixes not in their detail versions but aid in rapid prototyping during development. Focused around Drupal 7, Wordpress, jQuery, Zurb Foundation and LAMP.
If you have used Webform module in Drupal it would have occured at some point: what if it could be further extended to support payment checkout? Good news is you can since Drupal modules are closely tied to its API. Some interesting statistics on Drupal 7 API: