This is a somewhat meta post in that I am demonstrating what I am talking about. I have been annoyed for a while about how links shared on Facebook, both mine and others, often have generic titles or wonky images. I finally decided to do something about it, and thought I'd share so that if you have the same problem, maybe I'll save you a bit of effort.
The key issue is meta tags (see what I did there?) and specifically Open Graph meta tags. Compute the correct og:image and Facebook won't go guessing it. Compute or set the correct title and description, and your link will look a little more professional. There are some tricks to learn about image sizes that work best, but I'll share those later (shortly after I bother to figure them out).
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