The marketing software company HubSpot offers a nifty feature called "custom CRM cards."  The idea is that a HubSpot dashboard can send a GET request to an API that you maintain, retrieve some JSON-formatted information and render it in some "cards" alongside other data.  One of our clients wished to use…

The first time I used the new link attachment tool found on sites like Facebook, I thought I had experienced something magical.  After pasting an external webpage URL into my wall-post form, an image, page title, and page description of the linked webpage appeared beneath my post as though out...