title: What are good custom keybindings in emacs?
body: <p>Emacs seems to have all the possible keyboard combinations already randomly distributed among it's commands. :p</p>
  
  <p>If I am to define new keyboard shortcuts, where should I put them? Which prefixes should I use?</p>
  
  <p>For instance: I want to define shortcuts for the following functions:</p>
  
  <ul>
  <li>indent-buffer (C-c i, after I got the answer) </li>
  <li>comment-or-uncomment-region (C-c C)</li>
  <li>rdebug (ruby debugger) (C-c R)</li>
  <li>rsense-complete (ruby autocomplete) (C-c e)</li>
  </ul>
  
  <p>Where would you put these? Why?</p>