Using FMS for Text data

[GYPr]

I plan to use broadcasting text data (JSON type of structure) to all the
subscribers hooked onto the FMS. Anybody tried out this type of an
implementation and have a story to share?

Also, any idea what the concurrency of the FMS could be? Since the bandwidth
used by all the users hooked onto the FMS will be very less, may be every
broadcast would be of 600 bytes on average, do you think the no. of concurrent
users would be predictable?

Thanks!