Cheer Runners on by clicking a Like button on LiveTrack

I often watch friends and family through LiveTrack sharing.  It would be really nice to click a like button or post a comment on the LiveTrack activity which would translate into "Cheering" in the runners headphones or series of tones/beeps on the watch, so the runners know they are being watched and cheered on.  Seems like it would be highly motivating especially when reaching a difficult stretch of a course.