title: WordPress + Multisite: How to add custom blog options to Add New Site form in Network Admin?
body: <p>In a WordPress Multisite installation I'm customizing, I need to add a simple text field to the entry form for creating new blog sites, which is located at</p>
  
  <p><code>Network Admin &gt; Sites &gt; Add New</code>  </p>
  
  <p>Naturally I need this field to get saved along with the other meta data from that form, in the <code>{new_blog_prefix}_options</code> table.</p>
  
  <p>I'm particularly interested for the simplest, most straightforward, and/or the "right way" (i.e. The WordPress Way) to accomplish this, but I'll settle for The Way That Works&trade;!</p>
  
  <p>So far I've encountered numerous dead-ends in my research:</p>
  
  <ul>
  <li><p><strong>Settings API</strong> - [<a href="http://codex.wordpress.org/Settings_API" rel="noreferrer">WP Codex</a>]</p>
  
  <p>As far as I can tell, the Settings API <strong>(a)</strong> <em>may</em> not work for the Network Admin section (although this may have changed in a recent version of WP); furthermore, <strong>(b)</strong> it seems like this only lets you add/modify screens in the <code>Settings</code> section of the Dashboard.  </p></li>
  <li><p><strong>wpmu_options</strong> hook - [<a href="http://adambrown.info/p/wp_hooks/hook/wpmu_options" rel="noreferrer">Hooks DB</a>]</p>
  
  <p>Seems to be a hook exclusively for adding options to the Network Settings screen.</p></li>
  <li><p><strong>add_site_option / add_blog_option</strong> - [<a href="http://codex.wordpress.org/Category:WPMU_Functions" rel="noreferrer">WP Codex</a>]</p>
  
  <p>Closest I can find; seems to allow adding site-specific options to the <code>{blogsite_prefix}_options</code> table, but still doesn't help with adding options to the Admin form.</p></li>
  </ul>
  
  <p>So... no dice. Any help is appreciated!</p>