Wildbunny is a game developer's blog with tutorials on physics engines, collision detection, isometric games and pixel-art.
Commenters bookmark its physics and collision detection tutorials and call the blog excellent, singling out the speculative contacts post.
I'm using Gumtree for payment and distribution, it's worked very well for me.
As for marketing, I've just replied earlier in the thread with a little more detail.
For a site with tutorials on game development, most of your readers will be using adblocking software. Therefore most popular monetization methods are: selling a book, a course or locking off content behind a paywall.
Here's an example of premium content:
http://aigamedev.com/premium/interview/dying-light/
Here's an example where the author sells the source code for his articles
http://www.wildbunny.co.uk/blog/
This blog is about all sorts of tech stuff but he sells his book "Game Programming Patterns" (which is very good!) in the side bar.
http://journal.stuffwithstuff.com/
This is excellent.
Also check out the speculative contacts post: http://www.wildbunny.co.uk/blog/2011/03/25/speculative-contacts-an-continuous-collision-engine-approach-part-1/
Even if your physics algorithms are wholly fake, you need quality contact resolution, or strange behavior will appear in collision responses, since any collision response is predicated on having correct contact information. (The consequence of bad contact quality, seen in lesser physics engines, is major errors where shapes can "squeeze through" other shapes or jitter against each other, gaining energy and eventually exploding.)
If you're interested you can see my traffic graph here:
http://www.wildbunny.co.uk/blog/2012/01/19/blog-micro-transactions-a-follow-up/
Its the top graph. I post a lot to reddit, which is where those spikes come from.
So far I haven't managed to post a popular article on HN, although others have posted my articles and they have gotten onto the front page, which is a little annoying. Guess the system rates certain people a lot higher depending on their karma...
This guy has some other really great articles if you search around his blog a bit. Here's few I have bookmarked.
http://www.wildbunny.co.uk/blog/2011/04/06/physics-engines-for-dummies/
http://www.wildbunny.co.uk/blog/2011/04/20/collision-detection-for-dummies/
http://www.wildbunny.co.uk/blog/2011/03/25/speculative-contacts-an-continuous-collision-engine-approach-part-1/
I found the following tutorials on collision helpful:
http://www.wildbunny.co.uk/blog/2011/04/06/physics-engines-for-dummies/
http://www.wildbunny.co.uk/blog/2011/04/20/collision-detection-for-dummies/
Excellent. This is the kind of stuff that I'd love to see return to HN more often. Take a look at the rest of his blog, it's excellent too: http://www.wildbunny.co.uk/blog/