IMSLP has added a membership plan. All scores will still be available for free to non-subscribers.
For an overview of the membership plan see IMSLP:Membership Q&A.
For more information on the reasons behind this change, see this announcement on the IMSLP Forums.
Please note that some newly-uploaded scores may only be available after a day or two to non-subscribers.
Free public domain sheet music from IMSLP / Petrucci Music Library
The IMSLP star is bestowed upon you for your fantastic contributions
The Hiram Sibley award for posting scans from external sites is hereby presented to you for your excellent work!