Madrid: websites for flat-shares?

Hello to you all!
I was wondering if I could get help on the following...
do you guys know of any great websites that would be good for finding roommates and finding shared accomodations in Madrid? Thank you so much for the info
-Heidi

Hi there! Have you already checked the "Classifieds & Personals" section of this message board? There are a few posted there.

Saludos, MadridMan