The Geostickers are currently only available in Los Angeles, New York City, San Francisco, Washington DC, Honolulu, London, Sydney, São Paulo, Paris and Riyadh, but given Snapchat's history, we'd expect to see them roll out more widely if/when demand and use grows.

The free feature is an evolution of options Snapchat tested in February, which let users pay (from $5 up) to design and use their own filters within a geofenced area -- and marked yet another attempt at monetizing different parts of its service. Despite the first attempt at location-based goodies proving popular, it closed the paid filter store in June. How long will the new stickers last is anyone's guess, but perhaps the bigger questions is how long before some other app does something similar?