You can also send messages to cellphones and pagers. In this case, you download and install Microsoft's software. This admits several possibilities. You can unnerve a chum who's just home from the pub by inducing the auditory equivalent of double vision. Or you can be conventional and solve the problem by splashing out a tenner on a headset - feedback from speakers allegedly being the source of the problem.
M aking the effort can be worth while.
I'd like to say that I have reached firm decisions as to which services are best, but the position changes day by day because of competition, as well as being influenced by where and when you phone. Also, some providers like to be paid in advance, others later. What is true is that the consumer is benefiting as a result. For example, a 10-minute phone call from India to the US costs an Indian clerical worker a week's wages.