Sadly, most of the good sites I got my pics from are now down and defunct. That's why it's good to save them, you never know when a site will vanish overnight. Olive's site is still up:
Kelly has an awesome collection in her photobucket but I forget her name password. Kelly if you see this please post!
But of course the best way to collect pics, and what most of us did, was frequent the hot pics threads on PLEBA That way you get a share of everything everyone has collected. Save the ones you want for your very own. Happy collecting!