I found two things today:
1. You can highlight code on WordPress. Here’s the guide and an example -the pythonic HelloWorld:
print "Hello world!"
2. You can write LaTeX in you WordPress blog in order to publish nice little equations (paraphrasing Jonathan Geffen in his poem “Thunders and Lightnings”, you seldom get to meet nice big equations). Here’s the guide and an example – the famous Fisher’s fundamental theorem of natural selection:
If you need a tool for experimenting with LaTeX, Texify is very useful.