Once you have created a post, you can not change the permissions assigned. Within seconds it has been delivered to lots of people - and perhaps everybody it was addressed to. If you mistakenly created a message and wish you could take it back, the best you can do is to delete it. We will send out a delete notification to everybody who received the message - and this should wipe out the message with the same speed it was initially propagated. In most cases it will be completely wiped from the Internet - in under a minute. Again, this applies to Friendica networks. Once a message spreads to other networks, it may not be removed quickly and in some cases it may not be removed at all.
Once you have created a post, you can not change the permissions assigned. Within seconds it has been delivered to lots of people - and perhaps everybody it was addressed to. If you mistakenly created a message and wish you could take it back, the best you can do is to delete it. We will send out a delete notification to everybody who received the message - and this should wipe out the message with the same speed it was initially propagated. In most cases it will be completely wiped from the Internet - in under a minute. Again, this applies to Friendica networks. Once a message spreads to other networks, it may not be removed quickly and in some cases it may not be removed at all.