sandcastle is a user on octodon.social. You can follow them or interact with them if you have an account anywhere in the fediverse.
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I've been followed by two follow bots. Made it Ma! Top of the world!
@CoughingSound there should only be one follow bot
other follow bots besides @follow_bot are lame
@archaicartist @follow_bot
Don't you try and take this away from me!!!!