Elgg, Scalability and MySQL Engine

This is interesting stuff for those who have in the past inquired of Elgg's "scalability". It seems that with some rather simple tweaking, one can "scale" Elgg (MySql) tables to be distributed over than one MySql instance on different servers. Have a read here

http://en.wikipedia.org/wiki/MySQL_Federated
    and
http://dev.mysql.com/doc/refman/5.1/en/federated-storage-engine.html
    and
http://dev.mysql.com/doc/refman/5.1/en/federated-description.html