I love OpenSMTPD. After years of running a postfix installation, OpenSMTPD is such a joy to configure and use. The configuration is dead simple, and it's pretty damn stable. I wrote a protip about it over on Coderwall. I plan on following up with more protips about more advanced configurations, with lmtp, SSL/TLS and greylisting.
Oh, and my friend Michail Yasonik redesigned my blog. It looks significantly better than what I had up before.