Blacklisted directory site

[AvniShergill]

After Panda update there are many directory sites, which are blacklisted by Google. How to know whether the directory site is blacklisted or not?

 

[adriennerich]

A Black-list is a database of known Internet addresses used by spammers. Most of the Internet Service Providers (ISPs) and Bandwidth providers subscribe to these Blacklist databases in order to filter out spam sent across their network or to their subscribers. There are many internet organizations that specialize in this field.

 

[sonikathakur]

it is sites penalize by google .