Add discoveries that are relevant to the problem you are trying to solve.
Add comments to provide an opinion of a discovery that others have made, or even to provide an additional point for your discovery.
You have a variety of media types that you can use to document each discovery.
By default the content type will be text.
When summarizing the discovery, don't just repeat whats in the document, only pull out those bits that are relevant to you and to the problem you are trying to solve.
When summarizing, get into the habit of providing YOUR view on the item you have attached. This makes it more valuable for the community.
Chose your TAGS carefully as they will help you in searching, and will help search engines and TribalMind match you to similar problems, discoveries and like minded individuals.