Cloudmagic.com does this already. And it also searches other cloud data too. - http://techcrunch.com/2012/09/18/personal-cloud-search-engine-cloudmagic-gets-ove

Cloudmagic.com does this already. And it also searches other cloud data too. - http://techcrunch.com/2012/09/18/personal-cloud-search-engine-cloudmagic-gets-overhauled-adds-facebook-dropbox-evernote-box-more/ http://techcrunch.com/2012/09/18/personal-cloud-search-engin...