I didn't like that there is no option to choose the type of links. Sometimes only nofollow links are needed for purchases, but this function is not available here. I'm glad that they track the placed links and when they are removed, they re-place them with new ones; you can track positions in Yandex and Google; a detailed report on each link is provided with the option to export to a file; you can also choose the type of platforms for placing links. From personal experience: crowd links are still relevant, even though they are considered spam. Search engine algorithms are far from perfect and continue to consider them as part of the external link mass, despite numerous discussions about them soon becoming ineffective.