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Source: https://writers.stackexchange.com/a/42615
License name: CC BY-SA 3.0
License URL: https://creativecommons.org/licenses/by-sa/3.0/

Source: https://writers.stackexchange.com/a/42615
License name: CC BY-SA 3.0
License URL: https://creativecommons.org/licenses/by-sa/3.0/

You have the legal right to reuse elsewhere what you post on Stack Exchange.

It's your content. When posting to SE, you give SE a _nonexclusive license_ to use it, and doing so requires that it's your content to license in the first place; see [the terms of use](https://writing.stackexchange.com/legal/terms-of-service) for the details, it's referred to as _Subscriber Content_.

So nothing legal would prevent you from reposting your own contributions elsewhere, even under a different (non-exclusive) license.

However, others' contributions are only available to you under the terms of CC-BY-SA, unless the copyright holder(s) license it to you on other terms in addition to the blanket license given by posting it to SE in the first place. So in order to use that content, you'd need to either comply with the terms of CC-BY-SA, or obtain a separate license from _all_ contributors to the content you are using.

Copyright applies also to derivative works, but whether a summary constitutes a derivative work in the legal sense or not seems unclear at best. I'm not sure I'd want to go there.

**It would be easier to either (a) use only your own content, possibly copied from SE if that's easier for you; and/or (b) use other peoples' contributions verbatim, with appropriate attribution and clearly marked as used under CC-BY-SA.**

That _should_ be enough to keep you in compliance with CC-BY-SA.

A good answer is likely to be meaningful even if read without the context of the question, or at the very least should be easy to adapt such that it is even without incorporating the question itself into the answer.

Standard disclaimer, I am not a lawyer (and certainly not your lawyer), yadda yadda.

Original score: 26