Mastodon - social microblogging service
We should eat our own dog food. Mastodon is a FOSS alternative to Twitter
Summary of your evaluation
In my limited experience with it, it seems to work well. There's not much more to say about it.
Wikipeida describes Mastodon as
"a free and open-source self-hosted social networking service ... on server nodes ... connected as a federated social network"
Pros and cons
- open source
- distributed / federated
- individual nodes can be more "focused" / special interest, improving the signal to noise ratio
- adoption not even close to Twitter. So, for getting the message out to the widest audience, Twitter is still king.
Indications of maturity level
The rest of the applications and services offered by the fediverse are also worth a gander -- and perhaps even a goose.