Does it really matter how many modules you run? According to 2Bits more modules means more RAM and CPU usage. Each time the Drupal stack is fired it needs to read all module files. Adding more modules means:
- Higher CPU usage;
- Higher RAM usage;
- More opportunity for bugs to slup in;
- More (MySQL) database hits;
- Higher chance of a module with slow database queries;
- More maintenance!
All of them are good reasons to avoid an open buffet of Drupal modules. Only use what you need.
- Free up server, PHP, MySQL and Drupal resources