upload image profile to writable or public

where is need to upload the users profile pictures? should I upload them to writable/uploads  or should upload then to public folder,

I tried to upload them to writable/uploads/users/ : 

http://localhost:8080/writable/users/1/p...531416.png

but I cant access to the image

Thanks

better put in public folder, the upload folder must have full access permission (on localhost). on live server, just need to change owner (CHOWN) to WWW-DATA.
writable folder cannot access directly on url since its outside the public folder ( just for read )