Welcome to WebmasterWorld Guest from 18.104.22.168
a) Is that true?
b) If true, does this apply to a penalized site too?
And yes, some sites that get penalized and then clean up the offenses begin to reappear "algorithmically". It happens gradually in steps, and not always all the way to their former glory. I'm not sure if this is a universal effect or something that Google is still testing in certain cases and not others.