title: how to manage vim plugin
body: <p>I want to know how do you manage your vim plugins. </p>
  
  <p>As it is,
  One of the biggest fun of using is that one can easily try many interesing new plugins, just download it and unzip it in under <code>~/.vim</code>. But if you try too often and try too much, you might get trouble as confilct of key mapping , in compatitble script version, dpendency between different plugin .....</p>
  
  <p>Then you want to remove some plugin ,kind of like rollback your vim to a sound condition. But, the rollback could be very painful . cus for some "giant" plugin, like perl-support ( it's great plugin, anyway), will consist of many vim scripts which spread in different dirctories. To remove single one giant plugin will be anoying, not too mention if you remvoe many plugin at one time. </p>
  
  <p>In a word , I'm looking for good practice for managing vim plugins.</p>