Larceny

Overview
Larceny is non-production skill. It is leveled by stealing crops from player farms that haven't been taxed, or from "at risk" farms (farms placed in the "wilderness") and also from livestock owned by other players. All three of these options for raising your larceny will also give you infamy (crime) points.

Alternatively, larceny may be leveled through the opening of coinpurses that are dropped from most mobs. Opening coinpurses costs a number of labor points dependant on the level and rarity of the coinpurse. Opening coinpurses does not give you infamy points. -- "We checked on this recently as rumors have spun up about Larceny's benefits. Leveling up Larceny only decreases the cast time and labor costs of opening pouches. It does not impact drop quality nor crime-related activities, despite the name."