Is the below content ownership language (from their site) fairly common? By posting Content to the Service, you grant us the right and license to use, modify,

Is the below content ownership language (from their site) fairly common? By posting Content to the Service, you grant us the right and license to use, modify, publicly perform, publicly display, reproduce, and distribute such Content on and through the Service. You retain any and all of your rights to any Content you submit, post or display on or through the Service and you are responsible for protecting those rights. You agree that this license includes the right for us to make your Content available to other users of the Service, who may also use your Content subject to these Terms. Sounds like it is, but also sounds like kind of a sketchy deal for someone who makes their living creating 3D models -- granting a random company who's only hosting your file permissions to use/perform/etc.