This is not even an issue and I can't believe it's been brought up. Innocent until proven guilty is what you should consider.

If people wish to lurk, then there is nothing wrong with that - dont label people suspicious. They certainly wouldn't be kicked or banned from chat for doing so - that's absurd and very unwelcoming. We had many lurkers on IRC.

It's not hurting anyone and the people are chat have zero obligation to contribute to whatever discussion is going on.

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