Talk on Nginx internals
For those who'd like to write plugins/modify source codes for Nginx, or simply want to know more about the fantastic software that they're using. 
Controlling Nginx from command line
Just learnt of this, that Nginx can be controlled from command line, or more specifically by sending signals to the process, for example:
kill -USR1 `cat /path/to/nginx.pid`
causes Nginx to reopen log files, suitable for a log rotation job.
The reference can be found at the wiki http://wiki.nginx.org/NginxCommandLine
URL Shortener project, start!
Started a bit on my URL Shortener project, making use of the opportunity to get my hands dirty with the CodeIgniter framework.
CodeIgniter is really easy to learn and use, I'm thinking of adding OWASP's ESAPI's functionality as a plugin (if it's worth the effort) in the future, so that more people will come to hear of it, and use it 
Meanwhile, have been stuck with a redirect loop problem when I test out my (test) codes with Aptana's built-in Jetty server, for reasons unknown. I guess I'll have to try nginx + PHP-FPM to see whether the source of the problem is really Jetty, or something else...