I just mean the types of links a person might happen to get from just having a generally good, on target website... not the type of footprint a spammer might leave, who was carefully trying to craft all the same signals but drew up a little short.
Again, I'm just talking random theory, making up definitions, etc. but my deep down conviction is, if you get a good representation of links from sites that are 'white/white' ('never spam'/'never porn') filters such as this one would get overridden.
...no proof, just sayin.