As you should know :), this particular blog has been around for 2 months, and it gets a lot of hits per day. However, very few (relatively speaking) come from search engines. And the ones that do come…
… well, let’s say that the top 5 searches are related to Sudoku. Which I only mentioned once, in a post about a version for Series 60 phones. And the top search string is actually a misspell, coming from a user comment.
In other words: virtually no one arrives here because he or she searched for something that this blog is about. Not technology, not games, not software, not blogging tips. No, people come here because they misspell “sudoku” in Google. 
Yet, the blog is relatively well linked, having earned a PageRank of 5, and having almost 50 blogs linking to it, according to Technorati.
Weird, isn’t it?
Now, consider a different blog of mine, The Games of my Life. It’s on the same domain, on the same server, using the same software, and even a variant of the same theme. It was promoted in mostly the same way. Less than 15 blogs link to it, and, since it was created after the latest PageRank update, it still shows a PR of 0.
It’s only 2 weeks old - today, in fact.
Yet, if you google for some terms the blog is about, or which are the subject of particular posts…
- “target renegade”: it’s the 13th result (appears in the 1st page of results)
- “natuk”: 7th result (1st page)
- “lords of midnight”: 17th result (1st page)
- “fahrenheit / indigo prophecy”: 9th result (1st page)
- “the hobbit spectrum”: 5th result (1st page)
- “tennis critters”: 7th result (1st page)
and, even better,
- “80s games”: 9th result (1st page)
- “90s games”: 2nd result (1st page) (!)
- “zx spectrum chaos”: 3rd result (1st page)
- “zx spectrum penetrator”: 1st result (1st page) (!!)
Impressive, isn’t it? Especially for a 2 week-old blog.
And, needless to say, people are arriving there from search engines.
What makes those two blogs so different in this respect? Almost surely this: the Google Sandbox. One is in it, the other isn’t.
Either that, or someone at Google loves games. 
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There are a lot of variables search engines use when they rank a website. The age of a website highly affects its traffic. The age of the game blog is a lot older then you think because the age of the blog is mainly determined by the domain and not the sub domain. All of your blogs are apart of the domain dehumanizer.com.
In a way, you’re proving my point: if it’s a part of the same domain, why does it get good results in Google, while the (older) tech blog doesn’t?
Either it’s the Sandbox, or it’s some dark magic.