It’s a thank-you to the donors who took Patrick Rothfuss’s Worldbuilders charity over the $600K mark.
Alice in Wonderland and Through the Looking Glass were the first books I read to myself, I am married to an Alice, and the officiant at our wedding (a conjurer who wore Templar robes!) recited Jabberwocky in lieu of a sermon, so you could say that I like this poem: Link.