What is the topic to old about?

[vip3r]

I was looking at things and i wanted to put some comments on some things but it says Toppic too old. What is that and what does it mean?

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[TwenteFreak]

It's kinda obvious, it's just too old to be bumped.

[DaSord213]

Don't bump old topics, that is what it's for.

[Regulith]

Curious: What topic were you trying to bump?