I highly recommend spreading out and creating accounts on other instances. Whenever one instance has issues or something, I just use another. That's the strength of the fediverse.
Plus, you might find (or create) some cool local posts, which helps spread out content.
Mastodon account also works as a backup since you can subscribe to communities and post comments from there.
Are there any reasons for/against using the same username across different instances?
Depends on whether you are trying to reduce the likelihood of people tracking you across instances (for example, if one account is for porn). If you just want duplicate accounts on which you'll do the same things, I don't see why it would be a problem to use the same name.
I highly recommend spreading out and creating accounts on other instances. Whenever one instance has issues or something, I just use another. That's the strength of the fediverse.
Plus, you might find (or create) some cool local posts, which helps spread out content.
Mastodon account also works as a backup since you can subscribe to communities and post comments from there.
Are there any reasons for/against using the same username across different instances?
Depends on whether you are trying to reduce the likelihood of people tracking you across instances (for example, if one account is for porn). If you just want duplicate accounts on which you'll do the same things, I don't see why it would be a problem to use the same name.
@ciapatri @Holodeck_Moriarty anonymity/self-branding