Prevent users from posting the same message in multiple channels #16
Description
Many users post the same message, often a question, in multiple channels in the hope of increasing their chances for an answer.
This is problematic in at least two ways:
- It's spammy
- Discussions on the exact same topic may arise in mulitple channels, which doesn't benefit anyone
Possible implementation
If the user has posted the same message recently (x message ago or time-based?) the bot could remove/block the post and instead show a warning to the user explaining why it's not allowed. Should also tell the user to remove the original message first if they want to post it in a different channel.
May not be a foolproof implementation, depending on how the bot compares messages. If it's only looking for exact copies, the user could, for instance, change 1 character on each post and bypass the system.