<p>I think you already have flagged some of the difficulties with the idea you are discussing. </p>

<ul>
<li>If you publish what may be original material on the internet, there is always a risk that someone will take it and publish it elsewhere without giving proper or indeed any credit. </li>
</ul>

<p>Similarly, </p>

<ul>
<li>If people comment on such material, there is always a risk that their comments (including improvements and even critical comments) will be published without their receiving proper or indeed any credit. </li>
</ul>

<p>Note that the criminals could well be third parties, and not even registered, let alone active, members of this or any other forum. The risk is compounded by the common use of anonymous or cryptic identifiers in many forums. </p>

<p>So, there are no guarantees. If you wish to safeguard your work, there is nothing better than keeping it private if not secret before publication. </p>

<p>That said, I don't think either point is really a major difficulty. Despite all too many cases of marginal or even total plagiarism, it can be quite hard to get good ideas published. It is fairly obvious but I think important that </p>

<ul>
<li><p>Pre-publication reviews can't really simulate the specific experience of review by a particular journal.  </p></li>
<li><p>You would be expecting CV or any equivalent forum to fulfil an extra purpose for which it is not intended. </p></li>
</ul>

<p>Yet I think there is a positive side to this too. </p>

<ul>
<li><strong>Nothing stops you posing a question, answering that question with a suggested method, and thereby inviting comments and other answers in the usual way. Otherwise put, existing practices allow you to try to provoke the discussion that you want.</strong>  </li>
</ul>

<p>There is an extra warning, however. Elsewhere I am a journal editor, and like every other editor I want to be clear that we are being offered original material. If you first make public your idea, then do so in a way that allows you to claim and date whatever originality it has. In your case, there is a prior conference publication that you could cite, but let's make the point crystal clear. Suppose a new idea is posted by user987654321, and then offered for publication to a journal by Phineas Fogg. Fogg may be challenged on whether he stole the idea from 987 and be obliged to prove that he is one and the same. That could be embarrassing at best. </p>
