Recently, we had a few customers who had enormous text messaging volumes generated by a handful of employees. We are talking 7,000 plus messages/month! There were no charges as it was all covered under their corporate plan. Cost is not the factor here but there is a definite productivity issue. If we assume that one spends 10 seconds writing and/or reading a text, then if my math is correct, this amounts to 19 hours per month. Most of the usage occurred during the business day and was not job-related according to the clients. For many companies, the cost of labour is one of the largest expenses. So 19 hours out of a 150 hour work month is roughly 13% in wasted productivity. I realize that you never get 100% employee productivity but such exceptional usage is always worth investigating.