Personally using my Yahoo account wouldn't work for me because:

1- Everyone would have access to all of my photos (as already mentioned)

2- I don't want to have my email address floating around out there (especially since it contains my last name)

I mean I could always open a new account but then why not just open a Fotki instead?
Brooklyn, NY

Hair: 3A/B, Underlayer of 2B
HG products:
Winter- Giovanni Tea Tree (co-wash) & 50/50 (condish); Curl Junkie Curl Assurance Leave-In; Curls Milkshake & Quenched Curls; Re:coil; BRHG
Summer: DevaCurl No Poo & OneC; CK; Re:coil; BRHG; Honey!!!

fotki pw= crrrls