A good way to practice fluency?

A good way to practice fluency? heard of this app awhile back but never got around to posting about it. Any one here use "[wakie] (https://wakie.com/)"? The app is a social wake-up-call service, basically there is a list of people who have requested a wake up call at about this time and you call them. the call automatically ends after 2(?) minutes. If I had a smartphone i would use it to periodically call people throughout the day to hold short conversations with strangers over the phone as a sort of speech therapy. Any one use this or think it would be a good or bad idea? EDIT: formatting