its a play on words kinda, most blockland (if not all) commands are started with a forward slash, so people say /support as if its a command to support the drama.
/thread
it also adds nothing to dramas and you should avoid using it just as is.
/thread actually comes from either HTML </thread> or BBC [/thread] which are both closing tags meaning the "thread" element is over.
it should stop being used
Ok you already know why people use /support now lock the thread.
OP is banned