I actually did click through the links to find those, and I was annoyed that I had to do that instead of having at least one rendered inline in the article.

It even has some examples of other size images inline, but none of the titular 88x31 buttons. I found it odd.

I clicked through a couple of those pages, didn't see any obvious buttons and even if I did, kind of ambiguous which ones are the right size without checking.

Article really could have used an example or two.