After excessive nagging by WordPress, I decided to upgrade to version 3.4. My questions are:
How often should I upgrade WordPress?
How often should I upgrade MySQL/PHP/Apache/Ubuntu?
The con of upgrading is that the newer version may have a security flaw. However, the new version has new features, and the old version may have had fixed security flaws.
Nobody has hacked my blog yet (that I know).
My blogging motivation has increased lately. Maybe my motivation was temporarily ruined by working in a lousy job?
I set up piwik! If that offends you, then you may use noscript to blog piwik.realfreemarket.org.