A lightweight module that exposes a class that will automatically provision a user account AND log the new user in. This is useful for quick sign up forms. This is module is for module developers and does not contain any UI level configuration.
Currently this module is really just one member function of the UserUtils class:
$utils = new UserUtils();
$utils->provisionUser(array('email'=>$form_state['values']['email'], 'password'=>$form_state['values']['password']));
I have included a quick example of using this within the module.
Sites always have a need for various call-to-action buttons. This module provides them, by way of a relatively simple custom block, that accepts a title, optional subtitle, and a link.