"Our overlords aren't home ;)"

As well as its inhabitants

There's also this but it makes even less sense imo.
https://en.m.wikipedia.org/wiki/Arecibo_message
Also, I don't know if I'm delusional because I have a flu-induced fever right now or if that's actually intentional, but I can kinda see a double helix when I quickly scroll through the binary string part (bottom of page). Anyone else seeing it?

Its really complex, but it is possible to decode it. vsauce made a video where he talks about it and shows how aliens would decode it.

Well yeah, it's explained right on the Wiki page, I'm just wondering why they chose the data they chose

To triangulate the suns location based on several notable stars that *possible* Aliens may be familiar with