It’s a reference to the book Hitchhiker’s Guide to the Galaxy where:

a) the number 42 plays a significant role b) the towel is hailed as the most useful thing a galaxy hitchhiker could possibly posses.

So Don’t Panic and don’t forget your towel :)

Thanks for the link! Really interesting to see how many already went dark. Can confirm that my frontpage doesn’t look anywhere near what is usually looks like.

Totally agree. Scrolling through reddit this morning was different. We’ll see how the fediverse will deal with the influx of users that is to be expected in the next two days :)