The issue has two aspects.

Firstly, Quora has its terms of use and if I understand them correctly, its content may be used if credits are given.

Now about Stack Exchange. I wouldn't consider Quora as a separate case because it's just another external resource.

IMHO, if there is content that completely covers the OP's question, a link to it may be given in a comment. There is no need to reprint it word for word if people can just click on it and read. If you have something more to say or if to answer the OP's question, you have to use excerpts from an external text and give additional comments, than it deserves to be a full-fledged answer and credits should be given.

Doing just copy&paste and bolding essential phrases without additional comments seems to be a waste of space. Doing it without giving credits seems to be unethical and smells of plagiarism.

Again, the aforementioned applies to any external resource, not only Quora.

The issue has two aspects.

Firstly, Quora has its terms of use and if I understand them correctly, its content may be used if credits are given.

Now about Stack Exchange. I wouldn't consider Quora as a separate case because it's just another external resource.

IMHO, if there is content that completely covers the OP's question and just a short quote does not suffice, a link to it may be given in a comment. If you have something more to say or if to answer the OP's question, you have to use excerpts from an external text and give additional comments, than it deserves to be a full-fledged answer and credits should be given.

Doing just copy&paste and bolding essential phrases without additional comments seems to be a waste of space. Doing it without giving credits seems to be unethical and smells of plagiarism.

Again, the aforementioned applies to any external resource, not only Quora.

The issue has two aspects.

Firstly, Quora has it's terms of use and if I understand them correctly, it's content may be used if credits are given.

Now about Stack Exchange. I wouldn't consider Quora as a separate case because it's just another external resource.

IMHO, if there is content that completely covers OP's question, a link to it may be given in a comment. There is no need to reprint it word to word if people can just click the link and read it. If you have something more to say or if to answer the OP's question, you have to use excerpts from an external text and give additional comments, than it deserves to be a full-fledged answer and credits should be given.

Doing just copy&paste and bolding essential phrases without additional comment seems to be a waste of space. Doing it without giving credits seems to be unethical and smells of plagiarism.

And again, the aforementioned applies to any external resource, not only Quora.

The issue has two aspects.

Firstly, Quora has its terms of use and if I understand them correctly, its content may be used if credits are given.

Now about Stack Exchange. I wouldn't consider Quora as a separate case because it's just another external resource.

IMHO, if there is content that completely covers the OP's question, a link to it may be given in a comment. There is no need to reprint it word for word if people can just click on it and read. If you have something more to say or if to answer the OP's question, you have to use excerpts from an external text and give additional comments, than it deserves to be a full-fledged answer and credits should be given.

Doing just copy&paste and bolding essential phrases without additional comments seems to be a waste of space. Doing it without giving credits seems to be unethical and smells of plagiarism.

Again, the aforementioned applies to any external resource, not only Quora.