I had no problems when I clicked on Ripplinger's link (I didn't try to sign up, but it takes me to the page shown in the thumbnail above). If you aren't seeing any free options, I think I know what the problem is.....
You've just visited the sugarsync home page and clicked on the 'Try Sugarysnc Free' button, which takes you to a page like in the thumbnail below? If so, scroll down to the bottom of that page, you will see right at the bottom in small green text "Limited 5 GB free account" (links to
https://www.sugarsync.com/free/).