Have you ever clicked on the blue words in the posts to see what happens?

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I did and it takes you to every discussion that contains that word in the posts. Those are your tags. What a great way to find a discussion that actually interests you. That would probably explain why sometimes you get a response to a discussion you started a long time ago. I personally scroll through the discussions and only answer the ones that interest me. I really don't feel like answering to things like, what color are your eyes? or what color underwear are you wearing? Surely as intelligent people we can come up with better things to discuss than that!