While we're not surprised to see Microsoft SkyDrive launching for the company's own platform, we certainly raised an eyebrow when it launched for Apple's platform too. In fact, iOS has got the initial launch of it.Not a million miles away from Dropbox, Microsoft SkyDrive is free cloud storage for your mobile device, as long as you are on iOS or Windows Phone 7.5. If you have the former, it's available now. For the latter, it should be around before the week is out.Get it and you can upload documents, photos or videos on the go, accessing them as and when you need them (network connectivity permitting) by browsing the thumbnails of previously-stored documents. You can also share a link to any of your files via email and organise your files further by creating sub-folders of content. 25GB is your limit, which isn't bad at all, especially as it is free.If you use Hotmail, Messenger or Xbox LIVE, you already have a SkyDrive account. If not, you'll need to sign up. Expect more apps to follow using SkyDrive too. We're thinking that rumoured Microsoft Office app for iPad for a start.