Update:
Looks like the site continues to move up in SERP results with Google, staying around the same with Bing and currently down a bit with DuckDuck has the following current search position for the "unix" keywords:
- Google (US): Between #7 and #9 (page 1) still moving up on page 1.
- Bing (US): #1 - #2 (competing with Wikipedia for the #1 slot, alternating between 1 and 2.)
- DuckDuckGo (US): Around #4 (has dropped a bit from before).
Traffic from search referrals continues to rise (not taking into consideration the US Thanksgiving holiday, of course).