Links to content I find interesting

Šifrovačky.cz 🇨🇿/🇸🇰 ‒ a community calendar of online puzzle hunts (šifrovačky) in Czechia and Slovakia.
Hacker News ‒ a forum with mostly tech and programming related news and blog posts, great for procrastination.
XKCD ‒ a webcomic that you probably already know... but if not, you should.
City-roads ‒ a perfect tool to serve as a first step in creating a giant wall map of the city you live in.
Geoportal Praha ‒ a place where you can find a lot of interesting maps of Prague.
Fruitmap.org ‒ a community-based map of locations of public fruit trees (rather old, but the trees usually don't move around a lot).