fosstodon.org is one of the many independent Mastodon servers you can use to participate in the fediverse.
Fosstodon is an invite only Mastodon instance that is open to those who are interested in technology; particularly free & open source software.
If you wish to join, contact us for an invite.
I just uploaded some photos from when I visited Vietnam in 2018. Please check them out if you are interested. Vietnam was one of my all time favorite places.