I am very happy to announce that I have started a witness which is now live. I was thinking about doing this for years but I didn't want to use any hosting company because they can give us the illusion of having nodes around the world but then those can be quickly taken down (or worse, taken over) in one go. Then some time ago @gtg published this post to which @themarkymark made this follow-up. Thank you guys for the inspiration. This is exactly what I was looking for - some small hardware that will do the job yet has super low power consumption. You know, blockchain tech doesn't need to use up all this vast energy.