FYI I also added some caching, some links on my More page, and some links in the (edited) "I'm an American, atheist, classical liberal, and philosopher. I like Ayn Rand, Karl Popper, William Godwin & Ludwig von Mises." sidebar bio.
And I added *italics*, **bold**, ***bold-italics***, and >quote colors to comments. (Put one or more > at the start of the line for quotes.)
Update: I got a new linode with Debian instead of the very old ubuntu I had. I got new versions of nginx and passenger, and I got rails 2.3 LTS. I migrated from mysql to sqlite3. I added 3 db indexes and enabled gzip compression for nginx. The result: utf8 unicode is now fully supported including emoji in comments! And things should be more secure and a little faster. 😎
Update 2: I added an RSS Feed For Comments. You can now get updated on blog comments with an RSS reader, not just new posts.