I have been using this long distance phone plan for the last 3 years and it is one of the best, cheapest and most convenient prepaid plan ever.
Pros: The biggest plus point is the mobile "Missed Callback" to our registered mobile phone. This feature enable mobile phone users like me to save a lot on mobile charges when making national or International calls from my mobile phones. To make call, i just need to dial the italk number which can be presaved in my mobile and then wait for iTalk to call me back. I just answer the call, follow the instructions and then will be connected to the number that I wish to call, be it National or International call. Besides that the validity for a mere RM 10 prepaid reload is 2 years!!!. The call rate is super cheap too. To ring to UK landline from Malaysia only costs a mere 20sen per minute through the Mobile Call back service!! That is real value for money.
Additional thoughts: The plan is so good that I just cannot think of any setbacks. Now I can talk and talk and talk to my son in UK, be it day or night.