That is the tip of the day for innodb

"Currently the scalability of Innodb beyond 8 cores is limited, in
fact with the current ( unpatched ) releases you may see a performance
regression with more then 8 cores. We wrote about this before. If you
have the money go with the fastest CPU’s available. Avoid servers with
lots of cores and a lower speeds."

http://www.bigdbahead.com/?p=158

Scaling with the number of cpus and computers is an "must" in the web2.0 area
What is the sense to have the hardware and not to be used

I was thinking at Jim's ideas with NimbusDB and it we will talk maybe
on this list about it
Also today i found in the mysql documentation the numerous int types
sometimes it should be just int and that is all