What does the name of the blog mean?

It is at once 1. An hilarious and (for now) topical pun 2. Grub Street was, historically, an impoverished neighborhood in London peopled by sometimes-dodgy publishers and the hack writers who provided content to them. “Grub” even became a synonym for said hack writers. 3. A “stack” in the parlance of the technology industry is a collection of software and/or hardware assembled for a particular purpose.

Grubstack!