A smaller image size might show the centralization a bit better. I can only see maybe from training as a printer for lithographic production. We learn little tricks like that.
Personally, I found it gets to the confusion and frustration part when the blogs about anything lead to a link about something said previous which also has a link to something blogged previously and so on. The intake of information becomes less a positive result, as there is so much else there non-relevant to the information being sought.
I do not write this as a negative to anything you have written. I do see the value in the things you write and I do see the help it provides many with. Though with the number of blogs been done on the markdown and how to format blogs, there must be something going amiss from the persons reading, to gain a better understanding of the how-to aspect. I have learnt somethings but the vast is still beyond my understanding.