Such inbound links direct search crawlers to the resource, this significantly impacts for ranking, so it is essential to enhance a resource without flaws that will interfere with promotion.
Placement is harmless for your domain!
I avoid filling in inquiry forms, (contact forms negatively impact the domain as there are complaints from operators).
Posting is carried out in allowed areas.
Inbound links are placed to their latest regularly updated database. Numerous resources in the database.
