Want to help Arch Linux? Install pkgstats! It gives basic telemetry on which packages you use!

Related: How to enable telemetry on KDE

pkgstats is a great way to help the Arch Linux packagers figure out which packages are being used by ((people who enable telemetry)). You can see some cool results of it here: https://pkgstats.archlinux.de/fun

Similarly if you use the AUR a lot, check out aur-auto-vote