This is a little tip to add faster meta keywords in big websites using meta tags drop list
open manager/action/manage_metatags.dynamic.php
near line 135 add a new option value:
<option value="keywords;0">keywords</option>
Now you can create different groups of list of keyword for different sections:
for example:
keyword for computers section:
pc, software, hardware, mac, laptop...
keyword for web section:
design, flash, css