The content on this blog has all been 'tagged' which key words or phrases, to make it easier for you to find the information you are looking for, and all of the connected information. That's created a massive index for you.
Those key words/phrases are all shown below - along with the total number of posts that are tagged with that word or phrase.
So if you'd like to find all of the 'Cloud' articles on the blog, just click on that phrase below, and you'll be directed to a page with every single article which has been tagged as containing 'Cloud'. It's much more powerful than search, because it will give you a much more focused list.
Simple - and very handy