Art collections, like piles of dust, can gather on flat surfaces such as walls, mantelpieces, and gently shaken cans of Mr. Pibb. Accumulate art and art awareness with today's Groupon to AskART, an online arts database:

• For $14, you get a one-month online subscription (a $29.50 value).
• For $74, you get a six-month online subscription (a $149.70 value).

AskART subscribers can stuff brains with Van Gogh–trivia tidbits and discover promising present-day doodlers, browsing through biographical articles about more than 200,000 contemporary and historical artists. This online database also offers aficionados an edge on the art market—sending subscribers email updates when works by their "priority artists" go on sale, alerting them five days before nonsubscribers to help them beat out other bidders and teams of canvas-eating art thieves.