The world's biggest social networks are locked in a serious, billion-dollar battle over one of the world's silliest innovations: puppy-eared, rainbow-spewing photo filters.
Snapchat is spending up big to keep its lead in the online photo market, while Facebook and Instagram shamelessly copy many of its features, and Apple and Samsung appear poised to enter the market.
But while it looks like a flippant fight, analysts say where you choose to share silly snaps could help decide which tech giant wins the internet popularity contest.
Telsyte managing director Foad Fadaghi said the battle was most important for $US33 billion network Snapchat, which relied upon photo filters to keep its young audience keen.
Facebook could afford to "experiment" with photos to attract more users, he said, while Instagram needed them to keep Snapchat at bay.
"The challenge for any of these services is maintaining users once the initial novelty has worn off, however," Mr Fadaghi said.