I’d like to suggest a change to the way the ‘Your post looks similar to…’ message works on the DevForum.
Right now it only shows at the beginning of creating a new topic, which usually doesn’t end up being accurate.
To resolve that perhaps alert the user when they pressed the ‘Create Topic’ button and / or allow the user to re-open it when they want to.
In the alert should be a similar list with links to already existing posts with a similar topic. A user can always click it away, but it’ll make it easier for the user to see whether the finalized post already exists as well rather than the first few lines.