Quoting sander-martijn lists@severeddreams.com:
two more things: if you have a need to migrate one of the sites to it's own install at some point (because of high traffic for example) it would be a bigger job to migrate the database.
Why? You would just export the tables you need (E.G. foo_%), create the new DB and then import the tables. The settings.php file for the site would remain the same except for pointing to the new DB.
Earnie -- http://for-my-kids.com/ -- http://give-me-an-offer.com/