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Possible Duplicate:
Where is the FAQ?

Why can't I add comments to questions?
What do I need in order for this function to be availed to me?

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migrated from Dec 19 '09 at 11:34

This question came from our site for professional and enthusiast programmers.

marked as duplicate by random, Ladybug Killer, perbert, Troggy, fretje Dec 20 '09 at 21:10

This question has been asked before and already has an answer. If those answers do not fully address your question, please ask a new question.

you need 50 rep, and sometimes it doesn't work in google-chrome – Pete Kirkham Dec 19 '09 at 11:31
Haha how cool is that.. didn't know Stackoverflow meta existed :D – eWolf Dec 19 '09 at 11:31
It also mentions using in the faq. Worth a read before you start out using the site. – Jamie Dec 19 '09 at 11:32

You probably can't add a comment because you haven't reached the necessary reputation level.

Here's an explanation from the FAQ:

On Stack Overflow, Server Fault, and Super User

50 - Leave comments†

† you can always comment on your questions and answers, and any answers to questions you've asked, even with 1 rep.

This means that, once you've reached 50 reputation, you will be able to comment on any question or answer. However, "you can always comment on your own questions and answers, and any answers to questions you've asked" with 1 rep.

On Meta

On Meta, the reputation requirement is different, because of the genre of the site.

So, you can comment on ANYTHING with 1 rep, but this only applies to Meta.

By the way, just for clarification:

This SO site is called Meta, it's for discussion about Stack Overflow.

If you don't fully understand the concept of reputation, here's an explanation from the FAQ:

What is reputation?

Reputation is completely optional. Normal use of Stack Overflow — that is, asking and answering questions — does not require any reputation whatsoever.

Remember, Stack Overflow is run by you! If you want to help us run the site, you'll need reputation first. Reputation is a (very) rough measurement of how much the Stack Overflow community trusts you. Reputation is never given, it is earned by convincing other Stack Overflow users that you know what you're talking about.

Here's how it works: if you post a good question or helpful answer, it will be voted up by your peers: you gain 10 reputation points. If you post something that's off topic or incorrect, it will be voted down: you lose 2 reputation points. You can earn up to 200 reputation per day, but no more. (Note that votes for any posts marked "community wiki" do not generate reputation.)

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This is in the FAQ - check out the list of reputation benefits.

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