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tiny brain - 140char limit
regular brain - 280char limit
galaxy brain - 500char limit
universe brain - no limits

Milan @milan

@cwebber so the universe brain does not enjoy microblogging anymore?

@milan @cwebber
The universe brain interacts directly with the federation as a server in the network.
The universe brain operates beyond limits.

@zatnosk @milan @cwebber I would differ
140 character - shouting short to concentrated message
280 character - shouting longer to short talking
500 character - talking
no limit characters - monologes only limited number of people will read

But most tweets and maybe also toots also are much much shorter, representing an emotion or a short statement.