If Facebook thought its Poke app would quickly dominate the timed messaging scene and make Snapchat a thing of the past, its plan appears to be off to a rocky start. As Mashable reports, after debuting in the No. 1 slot on the iOS free apps list, Poke has experienced a precipitous drop in popularity, and is now more than 700 spots back after just one month.
Both apps allow users to send messages to their Facebook friends, which automatically delete after a set time. Unfortunately for Facebook,
