MySql Clusters work great!!! (Score 3, Informative)

I have personally installed, setup and maintained a 5 (3 slaves, 1 master/slave, 1 slave/master) node cluster using Heartbeat and MySql replication. It works great!! My guess is that 80% of MY Mysql usage is content and needs READ-ONLY access. So I have 3 slaves that are used in a Read-Only cluster. The master is one of 2 other machines and ALL WRITES go to it. In the event of a MASTER db going down, the remaining slave promotes itself and updates the other slaves to point to itself. Been working great fo 8 months!!!