Black sites catalog

The catalog which requires a compulsory posted return link and checks whether it exists. You shouldn’t register on such catalogs, because you would have to create a page with the dump of links to catalogs. And there is a great probability to get a ban (exception from index) from search systems for posting such a page on site. There is also a great amount of catalogs that post a link to site through redirect. You get almost no profit from such a link. PageRank isn’t transmitted through it, as like weight of the keywords embedded in the body of the link. The profit such catalogs give you is an extra rush of visitors. But it is not too big as a rule. That is why there is a sense to register only in the most big catalogs. Sometimes you may find the catalogs which post a link through redirect and then require a direct return link! You’d rather escape such catalogs to save your time.