diff --git a/CONTRIBUTING.md b/CONTRIBUTING.md
index a2d43d9..c4f3696 100644
--- a/CONTRIBUTING.md
+++ b/CONTRIBUTING.md
@@ -9,3 +9,10 @@ Please ensure your pull request adheres to the following guidelines:
 * New categories or improvements to the existing categorization are welcome.
 * Check your spelling and grammar.
 * The pull request and commit should have a useful title.
+
+Unsure whether something fits here or not? Answering these questions will help.
+
+* Is the tool used in a formal web archiving programme?
+* Does it archive or capture and preserve other people's data not just backup your own?
+* Does it make use of widely accepted web archiving standards ([WARC](https://iipc.github.io/warc-specifications/), [Memento](https://tools.ietf.org/html/rfc7089), [CDX](https://archive.org/web/researcher/cdx_file_format.php), etc.)?
+* Is it focused on a broader sense of web sites and web-like platforms (public, interlinked), and not on individual applications that just happen to use a browser as a runtime environment?