Having 48 new people in one year is amazing for me to see. That is four times the total head count of Automattic when I joined in 2007. Last year also saw Velda Christensen join Automattic, which doubled the number of Automatticians in Utah. :-)
Twenty twelve also brought new challenges for me as my focus at work shifted from Akismet (check out the crazy spam numbers in the spam vs. ham chart) to VaultPress. Looking forward to both services (along with the rest of Automattic) having a great 2013.