[GazooAz]

So when I put stuff on Skydrive and download it to my phone am I getting charged data usage for this service?

[TheWeeBear]

You will be using data if you aren't uploading / downloading it via WiFi on your phone GazooAz. :)

Everything you access on your phone will be using data unless you use WiFi.

If you connect your phone via Zune and transfer photos to SkyDrive via a PC then that's not using your data of course. :)