I don't really see where there is an option to review a requester from yesterday, or any day that isn't the present day. That doesn't make much sense to me considering how many requesters don't approve/reject until days past. I got an undeserved rejection yesterday from a requester that has "no rejections" on turkerview and I want to let the community know, but I can't.

 

If you are using MTS, look for the dropdown.