risks
The Open Software License, like the GPL, is sometimes considered high-risk in certain contexts because of its requirements regarding how modified code must be distributed. Both the OSL and the GPL have strong copyleft provisions. This means that any modified versions of the software must also be distributed under the same license terms.
limits
to distribute or communicate copies of the Original Work and Derivative Works to the public, with the proviso that copies of Original Work or Derivative Works that You distribute or communicate shall be licensed under this Open Software License;
derivative works you distributed shall be licensed as OSL