- There are no #groups, which were a #KillerFeature for Facebook.
- No #BirthdayReminders.
- Most people don't use their #RealNames, so it all feels impersonal. Well, it's all well and good to be a #nymian and choose your own real name, but at least be consistent then, and not have a name for #Mastodon and another for #GitHub and #LinkedIn.
- People aren't sure what to post. Most post links and thoughts. Very few personal diary/updates and selfies, although those might be nice.
...continuing...