Suddenly. SugarSync finishes free accounts

Completely unexpected letter found today in his mailbox.

Dear SugarSync User,

Thanks for using SugarSync. We will transition to a paid service. In order to continue using SugarSync.
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Making this change is something we planned for a while. SugarSync users can get more from you.

Service decided to commit ritual suicide? After all, I have not found any advantages over competitors for all the years of use.