So, I suggest that there should be a pop-up notification when someone clicks the "Ignore" button asking user's consent before actually putting the other user on ignore.
That suggestion makes good sense to me. (Thanks for using this thread, BTW.)
I see Loyce isn't happy, so I'll explain why I think this suggestion tracks:
You don't necessarily have to be a traditional pop-up. It could be a prompt question. Basically it is a message that appears in the browser, which must be confirmed. Using this type of command even avoids using javascript. As it only occurs in situations where the user himself intervenes, I don't see a big problem.