I've been lookingh around for a while for an SMS provider that will work well and cost effectively for me as a SME and developer working with low-volume traffic. I found that SMS Broadcast matched my requirements best from the available options. Sure there are cheaper options for higher volume, and there are others with more facilities, but SMS offers tye core facilities at the best price. The API gives me all the actions that I require - send, receive and check credit, and doesn't need me to pay extra to be able to receive incoming texts (in response to an outgoing text). And a deal-breaker with other providers - SMSBroadcasts credit dont time out after a period! Its early in our business relationship, but I'm looking forward to a long-term business relationship.