The first criterion to consider when purchasing backlinks is the relevance of the link website to the target site. It is really not worth buying backlinks based on PageRank only. There are many factors that contribute to the ranking and simply going by PageRank is not sufficiently focused to offer long term success. This is also the reason why there is hardly a relation between a high page rank and rankings on Google anymore.

We are convinced that the trend will be even stronger in future. For post links we therefore do not identify the PageRank of the individual post URLs, but only that of the start page / domain. In addition, Google tends to no longer display PageRank values for sub-pages.

Only bookings with a clear topical relationship between the buyer's URL and the seller's URL make clear sense. Content-irrelevant links no longer lead to the desired results. With linking, the content relevance of two webpages is much more important than PageRank.
 
Content relevance means that there is a relationship between the target URL and the offer URL in terms of content. This does not mean that the target URL must deal with exactly the same topic, but merely that some reference can be found between the two pages. It is for that reason that our product Post Link is only accessible via our keyword search function.