SugarSync, the web service that backs up and synchronizes files across multiple computers and mobile phones, is rolling out a feature today that lets users provide public links to their files. These links can be used to virally spread large files stored on SugarSync to social media platforms such as Twitter, Facebook and LinkedIn. For example, a musician can share a song by posting a link to it on Facebook, or you can post a link to your resume on LinkedIn. This feature replaces the need to send a file by email, which may reinforce the trend of people spending more time on social networks and less on traditional email programs. Since the folks over at WebWorkerDaily last reviewed SugarSync, it’s incorporated more social features into the service, including the ability to let users publish photo albums directly to Facebook. Sharpcast, the San Mateo, Calif.-based maker of SugarSync, raised $10 million in funding from Sigma Partners, Draper Fisher Jurvetson, and Selby Ventures earlier this year, bringing its total amount of funding to $26.5 million.