First three links on the topic I just found googlin' around:
http://onlamp.com/pub/a/onlamp/2006/04/20/advanced-mysql-replication.html (this one really impressive)
http://www.neocodesoftware.com/replication/
http://dev.mysql.com/doc/refman/5.1/en/example-auto-increment.html
It really seems that with MySQL 5.1+ it turned out to be really simple replicating things around.
Enjoy
