Firstly, well done on the site! It's looking really good. I was wondering if you could sort the topics into "worlds" kinda how WonderHowTo did to make series of articles easier to find. So, like, having all the Crypto stuff under the Crypto world for example. I understand that you already have the tags system in place, but personally I'd find the world system more intuitive.
Just a thought tho. And well done on the site once again.