copy database for duplicate site? Now have set up multi-sites is it possible to just cp database.sql to other databases so the site is duplicated but running independently?

I remember when I first set up multi-sites I got it wrong so that when changes were made to one database , it would translate to other until I separately created databases for each.

I know there are other ways of saving settings for a commonly created site in features which I have yet to try but isn't it easier to just copy the mysql over 
to other database and make small changes from there?
You can simply copy database all right, if you remember about critical points:


Make sure settings.php really points to proper databases
Before importing SQL file to new database, find and replace old URL and site name with new one.
If you keep any cache settings for external tools, like memcached, in database, make sure you either uninstall them before SQL export and then install again, or find &amp; replace in SQL file before importing.