The new product (currently in Public Beta) looks really awesome, and allows you manage your mobile services, real-time from the CellC website. From the MyTools site, you can “Record Special Voicemails” for different contacts, Get access to your call history (instantly) as well as Block unwanted calls. I know the last one will go down like a house on fire for some people.
To get a better idea of the new service, check out this video from CellC, which explains the service in a bit more detail.
Well done CellC !