I have a website that I'm admin-ing (http://www.calvinistgadfly.com), and it gets 25,000 to 40,000 visits per month. The hosting provider has informed me that database load from this site is *extremely* high, and I'm wondering what sorts of tips/tricks you guys might have to help reduce the database load.
I know that reducing the # of queries should reduce load, but what sorts of things initiate database queries? Does having two different blog categories tagged separately mean two queries?
Any info you guys have on WP optimization in general would be *greatly* appreciated