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The pass couple of days I see this little popup on the side of questions that says "Chat with an expert":
At first I thought it was a functionality in which you can directly go into a chatroom generated specifically for that question but when i clicked on it I get this...
It's an April Fools joke. You can chat with an "expert" (a bot) if you'd like, or just dismiss it permanently. See What is "chat with an expert"? on meta.SO.
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