user304: I realise it's a deficiency in the SE system, but a new user (from memory) can't post comments to questions or answers, unless it's their own.
A lot of users throughout SE as a whole do this, post an answer that really should be a comment on a question or the answer in question because they can't offer said comment because their rep os too low. 
How should this be handled?
For example, in this question:
error: redefinition of ' '
There is a down-voted answer which someone else has come out in support of (rightly or wrongly) but can't add a comment because their rep is 1. But in the scheme of things, if this is in fact valid, then it could serve as a valuable comment and aid to future searchers. 
For the interim I am going to manually create the comment for him and recommend his answer for deletion, but I'm open to suggestion on what the "norm" is

user220: Flag it and let a moderator take a peek. We have the tools to directly convert an answer to a comment (so that it looks like it was posted by the user who posted the answer) or delete the post altogether. We also have the know-how to properly respond to the user to educate them about Stack Exchange and its practices.

304: <p>I realise it's a deficiency in the SE system, but a new user (from memory) can't post comments to questions or answers, unless it's their own.</p>

<p>A lot of users throughout SE as a whole do this, post an answer that really should be a comment on a question or the answer in question because they can't offer said comment because their rep os too low. </p>

<p>How should this be handled?</p>

<p>For example, in this question:</p>

<p><a href="https://arduino.stackexchange.com/questions/3331/error-redefinition-of/26833#26833">error: redefinition of &#39; &#39;</a></p>

<p>There is a down-voted answer which someone else has come out in support of (rightly or wrongly) but can't add a comment because their rep is 1. But in the scheme of things, if this is in fact valid, then it could serve as a valuable comment and aid to future searchers. </p>

<p>For the interim I am going to manually create the comment for him and recommend his answer for deletion, but I'm open to suggestion on what the "norm" is</p>
 220: <p><strong>Flag it and let a moderator take a peek.</strong> We have the tools to directly convert an answer to a comment (so that it looks like it was posted by the user who posted the answer) or delete the post altogether. We also have the know-how to properly respond to the user to educate them about Stack Exchange and its practices.</p>
