no sig,
ACARS make our life easlier then ever, we use it on collecting aircraft performance data for Maintance, uplink loadsheet for Load control and passenger info for traffic. In operations we use it to collect data on position report, long range communications (much better than VHF), weather uplink, message relating to reclear operations, recvd ATIS and Clearance (at some airport) and sometime foot ball result

We find it safer and clearer then voice communications, as it does not disturb the deck-crew (e.g. in approach, after take-off).
Brgds,
Sai