While testing some queries to see how a few money SE questions are ranking in Google's search results, I came across the following. Witness:
Is this inference of a "Top answer" a feature of Google exclusively, or is it driven by metadata provided by the Stack Exchange question page, and Google is simply taking advantage of it?
If the latter, i.e. Stack Exchange is providing "Top answer" metadata, wouldn't the above behavior constitute a (marketing) problem? The search engine result is citing the close-reason as the "Top answer". Not very inviting for a click-through?