Some link only answers can be okay if they are specifically telling us what exactly is at the link and showing why it cannot be copied. While we prefer a step by step solution here there isn't really a problem if there is a real reason the answer is a link.

For this reason I would apply the same reasoning and quality requirements we have as I would an [answer that is recommending software][1]:

> ##Follow this general outline: 
> <sup> **BOLD** items are required. </sup>
> 
> 1. **Title of the product with a link to the download/main page.**
> 2. Quote the site's product summary.
> 3. Add any pictures that are relevant to the question.
> 4. If it's not installed using a normal installation file, or package manager, then give instructions on how to install.
> 5.  **Give a brief overview of HOW to use the product OR in cases where it's too long, link to the product's manual pages.**
> 6. **Give any personalized information to the OP regarding how the recommendation solves his/her question.**
> 7. Specify any system requirements, e.g. Only works on Windows, Linux, OSX, or bootable media.
> 
> ##Things NOT to DO:
> 
> * Post only a link to the site.
> * Recommend software that you haven't used personally (there MAY be rare occasions where this is valid, BUT you must let the OP know
> this).
> * Answer questions that are simply asking "What's the best XX software" or "I need something that does XX."

  [1]: https://meta.superuser.com/questions/5329/how-do-i-recommend-software-in-my-answers