Quoting "Tom Holmes Jr." tom@tomholmes.net:
For multi-sites ..... do I definitely need table prefixes? or can I share all my content with all web-sites?
I definitely need an answer to this if someone could provide it .....
That is a design decision only you can make. You can share as much or as little as you like. See the settings.php file for possibilities. You may have common and uncommon data for each site. But you would have to tell Drupal what is and isn't shared.
Earnie -- http://for-my-kids.com/ -- http://give-me-an-offer.com/