Referential site audit
Analysis of the reference mass of a web resource
The reference mass of the site is the whole set of incoming links to the site from other Internet resources. The quality of the reference mass of the site is one of the main SEO-indicators, and if a large number of low-quality links is present in the resource’s link profile, the site risks receiving search engine sanctions. In Google there is filter "Penguin". This service will help you find and fix problems with external links.
The price for the service is 150 USD. Deadline 2-3 working days
The service is free in the package: "Promotion of a young site" and "Comprehensive promotion"