WordPress MU

hello. I am concerned with how wordpress mu organizes its data base.

For every blog that is created a new set of tables created for that blog.
is there a reason for this?
will it take up an more memory then if I configured it to work with the default tables?

it just seems so much. if I want to look at the database, it shows 20 tables! and that only a few users. when I deploy my wordpress-mu there will be over a hundred of users.

is there a plugin to change the behaviour of the database?

is there no reason for me to worry?

please let me know.

This has been covered here in the forums more times than I count count.

Please search.

Thanks,
Andrew

Example:

http://mu.wordpress.org/forums/topic.php?id=3039

There's a number of threads on the topic as Andrew says.

http://mu.wordpress.org/forums/topic.php?id=5489
http://mu.wordpress.org/forums/topic.php?id=4977
http://mu.wordpress.org/forums/topic.php?id=1343
http://mu.wordpress.org/forums/topic.php?id=1155

Lovely, "this" again?

Ugh...

thanks very much for your help.

and yes, searching is the first thing that I did.