title, text, and tagging conventions
I believe it would be easier to read through a list of "Where can I find X:" questions if there was a clear, minimalist title that provides key features required to identify data like:
Pigs (in space, pounds / year ) ?
With the units and scope in parantheses, and the question to indicate that they are looking. Perhaps there could be a "binocular" icon to represent "looking for".
Since many users will never see this post, when someone puts the phrase "I find" in the title field, a helpful notice could appear suggestings whatever conventions are adopted.
In addition, I think that there could be suggestions for relevant information that will help others provide useful answers, both in the text and tags. There is likely a set of key information (what where when ...) that could be requested, and this could make use of tags for categories and scopes of data.
Going off on a limb ... text and tags information could be used to search meta=-data of open data sets as the question is being typed ...