I don't know. I've gotten the impression that grad schools like to see you having a specific area of interest that matches with their interests, but I don't know what I want to focus in yet. I just said in my personal statements that as an undergrad, I have really enjoyed algebra, analysis, and topology. I tried to list a couple potential areas of interest and possible professors that I would like to work with, but nothing definite. I'm worried that this will hurt me, but I really don't have a clear favorite are yet.