Tip with references
A tip or bit of advice that has an authoritative reference
Of course, who or what is an authority is subjective. Let the votes decide
Matt Cutts explains that freshness is only 1 of 200 signals, and unless you're competing with a news site, like The Verge, you're not going to need to be fresh. Google differentiates between queries that deserve freshness (e.g., earthquakes) and non-fresh-deserving queries.