If you are a Windows Phone user you may have received an email from Windows Phone offering you an additional 20gb of SkyDrive storage, which is free for a year.
To show our appreciation of Windows Phone customers, we are giving you an extra 20 GB of free SkyDrive storage for one year. This is in addition to the 7 GB of free SkyDrive storage that all customers currently have.
I am fortunate to have signed up for SkyDrive when they were offering 25gb for free, but was still entitled to the “Enthusiast Bonus”, so am up to 45gb, though back when they offered the larger amount your file size uploads were limited to 100mb. I believe it has now been increased to 300mb.
If you haven’t received the email yet don’t threat, hopefully it will be on it’s way to you soon. I’m not totally sure what will happen after the year is up, it expires exactly one year after you redeem the offer. You may be offered a payment option.